I totally understand... I applied to 5 programs, and have received 3 rejections with no sign of any interviews/admits from the last two either. I am devastated... I should have invested more in a "Plan B"... And it kills me to see people talking about how they are upset that they didn't get into their dream school but got admits from numerous other places when I am desperate for one offer from anywhere I applied to. I am right there with you in the misery category.
During my whole application process everyone was so encouraging that I had a very strong application, and then to come out of this empty handed... It hurts. Badly. I also cannot afford to just wait it out and apply again next year. I have to go get a job. And given bio jobs are pretty limited for people with just a Bachelor's degree, I might have to switch fields if I can't find anything that is relevant to my studies. Talk about having an existential crisis (day after day).
I am so sorry your second round of this has been rough yet again... It is embarrassing to talk about failures (for me at least), especially when people are more than happy to share their numerous successes. But, you are not alone at least. Hopefully you hear good news from your other 3 programs very soon!