My Ex Girlfriend (who's 5 Months Pregnant With Our Son) Has Went Completely Silent. Suggestions?

Location: South Carolina/ Georgia So quick back story, I dated this women for a little over a year. We've been apart for two months now and as of a month ago there's no communication whatsoever. We were still talking and things were amicable initially after the breakup, even laughing at times. She promised I could still be present at the appointments and be in the delivery room. That was a month ago and I haven't heard from her since. She never gave an explanation as to why she went silent, she won't even respond when I ask about our child, and she's due in May. I don't want to keep reaching out making me look desperate and harassing, but it's all I can think about. One major issue is that she is in Georgia and that state has the STRANGEST laws regarding fathers and their rights to have ANY decision in that child's life. What advice do you have? I've ordered groceries a few times and paid to have her grass cut every week. I've bought a crib, car seat/stroller, baby monitors and things of that nature. I send money every month however she's yet to cash the checks. I'm trying to support her from afar, giving her space, and respecting that our romantic relationship is over. What does a man do in this position?

Side Note: I'm aware that it was my fault it ended, I humbly accept that. I have PTSD from my time in the military and was working with the psychiatrist trying different medications to find the right one during the last few months together. My mind and behavior was eratic and unpredictable. We argued excessively and we agreed it wasn't healthy for our son. I'm just confused as to why now, without provacation, she goes full no contact when we were communicating right after the breakup. Is there anything else I should or could be doing?