New to this

Hi! Me and my fiancé have been together for almost two years. I met him when he was 17 and I was sixteen. Yes if you do the math I’m still 17. But going on 18. Me and my boyfriend have been sexually active for quite a while and I used to take birth control until my mom stopped paying for it and then didn’t do my Medicaid. It’s too expensive to go see my obgyn and have them put me back on it. Eventually we stopped using condoms too but he wasn’t a dummy he put it on my tummy. Howeveeeerrrr one night I was feeling freaky and let him cum inside of me and damn one time is really all it takes because I’m pregnant. And freaking out because yes that was stupid but I wasn’t expecting that. Please no hate on my age. THIS WASN’T PLANNED AT ALL. But I need some help. How can I find affordable healthcare while I’m pregnant? And what’s my next step?