need advice on what to do?

Ok my ex girlfriend is 7 months pregnant and we have been broke up going on 4 months now. I have been at all the baby appointments and have tried to get back with her and stuff. We had no problems before the pregnancy all our problems came up after she got pregnant. During a month or two during this pregnancy things were good between us and we got along great and talked alot but for past two weeks or so the talking has gone away again like it did in the beginning and the fighting has came back. She said at our last fight she wanted an happy family and when I meet up with her last I told her i'm sorry for alot of things, and that I was wrong in alot of ways during this time. I told her I wanted to work toward being a happy family and connecting again and when I asked her what she had to say about it she said she didn't have anything to say right now that she will go over what I said because she made me text it to her after we talked in person. But she just won't talk to me like she use to and she has hung with other guys and she just told me lastnight that the guy she is hanging with they kissed. I asked her if she has feelings for him and she says she doesn't know, and says she still has some feelings for me but things have just got way to far out of reach. She says I haven't been supportive and I don't talk to her but she has told me many times during this pregnancy she just wanted space so thats why I backed off and let her come to me. I'm just so hurt about this other guy stuff even thought we are broke up and she said that when I said I didn't think I could be friends because of the feelings I invested into her thats when she turned to this other guy. I known her 9 years and Though she would be the one. At times she shows signs of caring, but most of the time its like she doesn't even want me part of her life. I love this girl so much and just lost on what I should do. I want to wait it out but I'm scared that there is nothing to wait on. Do you guys think that she is just going through the stages of each trimester as most of our problems have came in the very beginning and now close to the end. What are your guys take she has also said that we both need space for now to be us because she said that this is the last three months that it just gets to be her. I need some good advice here guys.