I need someone to vent to ...

Ok so I missed my period for February, my last period was like January 17 , I took two clear blue pregnancy test and it said positive so I’m pregnant . I told my mom of course she wasn’t happy about it because I’m 18 I will be 19 nov 9 , so she kicked me out . I moved in with my bf , I told him about it at first he was cool about it then he started talking about how I need to get a abortion because he’s not ready and all this other crap . So I basically have no one support my mom is saying I can come back only if I have got my abortion done . Doctor says I’m 13 weeks so my abortion cost a lot but my bf said he’s going to pay for it I’m the only one who wants to keep the baby but the two people I need support from is making me chose them or the abortion. What should I do ? Pls help