I have no one else to vent to soooo...

a month and a half ago, my ex and i split because he started hiding his phone.. instead of admitting what he did, he tried to say i was crazy.. we kept talking for awhile, and he ended up staying the night with me one night a week after my period, and we had sex.. well the next day, I found out he had been having sex with a girl from work, so I blocked him and decided never to talk to talk to him again.. fast forward to now, three weeks later, i get a positive pregnancy test... i text him and tell him and he comes over to talk about it.. he asked me to get an abortion... we were TTC for seven months before we split up, and he held me while i cried over the two miscarriages i had, and now he wants to me to KILL my unborn baby.. and he also told me he doesnt believe it's his and he wants a paternity test.. he was the one messing around on me.. im so lost right now.. this morning when I woke up, I still thought I would never have to talk to him again, but things changed so much, sooo quickly... it's soo hard already and hurts so much.. I was JUST starting to move on and be happy..