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 but just said that they are just friends and I have no reason to not believe her on that. 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 im 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.