Negative boyfriend

So I found out on Thursday February 6th that I was pregnant, I am 5 weeks and 3 days today, I told my boyfriend the same day I took the test ( I just turned 20 less than a month ago and he’s turning 23 in a little over a month) he told me that the test must be wrong that it must be a false positive because I’m on birth control, well I had a doctors appointment the next day and I told her about the situation, she tested me again in the middle of the afternoon and it came back so positive my control line was faint, she proceeded to tell me that one of the prescription medicines that I have to take daily causes birth control to cancel out on top of that I have an MTHFR (folic acid) deficiency so that’s thrown I top of my medicine canceling out my birth control, I told him a million times and as an EMT you’d think he’d know better, that birth control isn’t always 100% effective because everyone is different, it would have been more effective if he’d just have listened and used a condom or tried to pull out but didn’t which now leads me to this: ever since I told him he went from blaming himself, to blaming me, to blaming my folic acid supplements saying I was better off infertile until he was set and ready for this, to blaming my doctor, and then just stopped talking to me as often as we usually do, to making it only about himself and what he wants, consistently hinting at an abortion, that that should be my main option because he’s not ready, because he wants a house, and telling me that I’m not ready and that I don’t have a real

Job, or a real career and no one will want to hire me, then switches to super supportive yesterday and all of today up to this evening, his exact words were “I’m not ready for this, I’m scared, I’m trapped in a situation because it’s ultimately your choice but you won’t consider me, I want more time for us we won’t be able to do anything, my life will be over, I’ll pay for it, it’s a pill you take once at the appointment and then I’m the evening and it’s just like a bad period, you’re not killing anything, it won’t hurt it or you” which I’m sure it would be kind of painful, emotionally and physically, but hours before this he was saying he’d be there for me and support me no matter what we decided, but he’s giving me emotional whiplash going back and forth and I don’t know what to do because I don’t want to to that, I want to have it, he won’t consider adoption and says all these nasty things about me and my family and bio family because I am adopted, he doesn’t want me to keep it and has said he doesn’t want it, and then says he’s excited and I just don’t know what to do, what choice to make, all the negativity and crying can’t be very good for me in my condition and to top it off my doctors think I might be having a multiple pregnancy, but I have to take prenatales with folate and two MTHFR supplements because they are afraid of having a high risk pregnancy with my deficiency