Help!! Advice on what to do.. Feeling depressed

So I'm married and pregnant ... We separated for two months and I find out that my husband got another woman pregnant . We got back together because I do love him and was willing to work on our marriage as long as he had no dealings with this woman . I of course wanted him to take care of the child once the baby arrived, but I felt like if he cared about repairing our marriage his only concern at this time should be me his wife. This woman of course was upset about him coming back home and kept calling and sending him text about taking him to court. He was ignoring her as far as I knew. Then later I find out that he has made contact with her claiming that she says it's not fare to not talk to her . I am his wife what about my feelings??? How can u try to please someone u only knew for a short period of time over someone you've know for years. We have been together since 2001, I asked him to leave... He has begged for me to forgive him but I tried to and he went behind my back and entertained this person seeking to destroy us. How can I ever trust him again. I have been ignoring his calls and text and he comes around and I can't stand to see his face. I can't help but to argue with him about what he did to us. Sad part is we have children together . I don't want to see him but he keeps cing around . I just want to get a restraining order and never have to see this man again.