lib87

I wish I had such an email! Lots of schools seem to work around the April 15 agreement. If you have accepted another school's offer and you get an offer after 15 April if the first school you accepted does not have a problem you can switch schools! And I dont think schools would want someone who wants to go elsewhere....plus funding seems to be a real issue this year!

School B, in my opinion, sounds like the better option to begin with... What makes you regret choosing it?
 
It doesn't seem like you should have regrets. It seems to have great funding, a supportive POI and people who are excited to work with you!

I want to squish rocks and shoot lasers and play with all the fancy toys no one let me play with before I went back to school.  And I want to do it forever.  Getting paid is just a plus, IMO.

I'm tired of being poor and underemployed.

The waiting was by far the worst part for me.

Start collecting bed bath and beyond coupons-they take them if they are expired, too! Love their stuff for decorating! :-)

All I have to say is eff them.  Seriously.  It's your life and your body.  First I say take time to be happy about being pregnant and get really comfortable and used to the idea of being a mom.  You have to feel comfortable and confident in yourself before you can approach your advisor about it, and you have to take an "eff you this is my life" attitude before you can approach your advisor.  That can take some time to develop, so take your time.  You don't really have to tell your advisor until you get to about 3-4 months.  I agree that you should take this time to lay out a dissertation timeline (a realistic one) taking into account maternity leave and baby care.  In a few weeks, you should also start thinking about child care arrangements; one thing I've heard from dissertating friends with babies is that thinking you can easily dissertate while baby sleeps is a farce.  You'll need at least occasional childcare to give you time to write.  Also find out about maternity leave policies at your university for doctoral students.  There should be an HR office that can give you this information without informing your advisor - or someone else who isn't your advisor should know.
 
Once you're comfortable and happy and in a good place and have things settled - diss timeline, an idea of what you might do for childcare, ideas about maternity leave length and when you might want to take it, etc. - then I would set up a meeting with advisor and matter-of-factly say something like "Professor X, I wanted to let know that I am pregnant and expecting my first child in January 2014 (or whenever).  I've thought about how this will affect my dissertation timeline and completion, and I wanted to discuss my timeline with you so I can begin to make arrangements and plan ahead."  Keep the discussion on your dissertation and not your life choices, which are really none of your advisor's business.  His only concern is how and when you are going to get finished.  You can also use this time to discuss applying for external or internal funding if you'll need funding to cover the additional time, but I would just talk about it all very matter-of-factly and straightforwardly, focusing on the completion of the dissertation as a task and not WHY you need to plan around these things.
 
If he makes any comments judging your choice, you can say something flippant like "I understand you feel that way/sorry you feel that way/[some other polite way to say I don't care], but I just want to talk about how I'm going to get finished at this point."  If you're getting vibes that he's really against the whole thing and that he's going to be a difficult prick, then you can say something like you're sensing his discomfort and you just want to make sure he's on board for this.
 
If he's not...then you can visit the university ombuds.  (They can be really helpful!)
 
Finally, congratulations!  Babies are cute and can be awesome.  I'm nearly in candidacy myself and I have a lot of flexible time - it seems like as good a time to have a baby as any, especially if you are headed for the tenure-track, for which there is no good time to have a baby.

My thoughts exactly.  Not to minimize your problems, but babies are so amazingly wonderful!
As others have mentioned, I've heard dissertation phase is actually a relatively good time to have a baby, because you have the most flexibility in your schedule.  Our department is more family-friendly, I think, as some of the students had kids before they joined the program.  Another person in the program had a baby in what would have been her second year of classes; they arranged for her to do more in the summer, to make up for not getting a stipend one semester.  Now she's back in classes, and besides all the normal mom craziness is back to the normal routine.  So, even when it's at a less convenient time, it can be done.
All this to say that your DEPARTMENT is the problem, not you or your baby.  If they want to be sexists (I don't use that term lightly) and seek to further limit the opportunities of women to be in academia, you don't have to apologize to them.  (I'm really ticked off on your behalf right now.)
In addition to scoping out your school's policies (the graduate student center or student senate may point you to the right sources, if you don't know individuals), it's worth scoping out what benefits your boyfriend has for "paternity leave" -- some companies are actually pretty generous.  If you come to your adviser with a plan in place -- how much time you'll need off, how your boyfriend is also making sacrificing, how you will arrange things after maternity leave, etc. -- then I think you will still appear like your professional self.  Rumors do spread quickly though, so I think it's best to tell your adviser once you have a plan in place, before it spreads to everyone else in the department.
Lastly, you need to buy this:
.

I would first educate yourself on university policy regarding maternity leave, protection for your position, and any anti-discrimination policies.  If you encounter problems, definitely document them.  Stay polite, but firm and consistent.  If you get a hard time, go up the chain.

Congrats to everyone!
 
I'm still checking my inbox and mailbox daily hoping to get an update but I guess as the saying goes sometimes no news is good news.

How about "I will get accepted, or I will smite someone," instead?