Birth Control Question

Cheyenne
So, I first started on the pill a month ago then like 2 weeks ago I started having side effects to the pill so, my doctor had me switch to the patch but now I feel like I'm having the side effects again and I just had sex with my bf last week unprotected and I just started the patch last week 2 days before we did it. Me and him have been together for almost 2 months. I'm just worried to get pregnant in such a early stage of a relationship. We were in the moment and we're good about protection except this time we weren't. I just need advice on what I should do.