In all honesty, if a couple of rejections are enough to put you out of the game, then maybe you should take a break and reflect on what you want to do and what you consider good writing and what makes good writing good. I don't think it's bad to stop and turn around a few times and decide if you want to pursue both an MFA and writing in general.
I'm not trying to be discouraging, but this is a field with a lot of rejection.
I think if you didn't get an email from UMass Amherst, you are likely out of the running. I didn't get an email either. It was rough since now I am certain I am out of the running for UMass and Oregon. It will be a rough draft season!