I got pregnant while my boyfriend was locked up and now I don't know how things are going to be

I am 18 years old and my boyfriend and I had been together for 3 years when he went to jail. I told him I couldn't handle all the stress and emotions that came along with him being gone. Then we decided to make try and make it work while he was still locked up. After awhile I quit talking to him... I figured he would realize that I just couldn't do it anymore. I love him with everything I have and while he was locked up I wound up pregnant . The father of the baby wants nothing to do with the child and wanted me to get an abortion and when I told my ex that was still locked up that I was pregnant he also wanted me to get an abortion. I don't believe in abortions. Though I am extremely scared i'm not getting one. I'm all this baby has. My ex got out of jail and I stayed the night with him the first night he was out and we talked and he doesn't know if he can handle me being pregnant. I love him so much! He makes me feel complete when i'm with him and it's something i've never felt before. I'm scared of losing him and don't want to be without him! Before he got locked up I wanted him to marry me and now i've messed up so bad that I don't know what to do with my life anymore! He is my rock that makes me strong and able to cope with life. He kisses me and tells me that he loves me and at night when I cry because he doesn't know he holds me and tells me everything will be OK, but I just don't see it. I'm severely stressed out and I will take any advice from anyone who is willing to give me advice! Please help me! I don't know what to do anymore!!!