Could I be pregnant

Please note that I am aware how I could've changed this entire situation and been more careful, but it happened and I can't change it so please don't let me know how careless I was being. Anyways, I have been sexually active since I was 15 with the same guy. I had been on birth control for about a year and a half. Well last month I missed a week of it due to my pharmacy not having it ready. I got my period after not having it for a year. (So basically I was back a square one and my cycle was normal) I had a period for four days and then it stopped. I had unprotected sex almost two weeks later and he came in me. The very next day I am pretty sure I started ovulating due to being extra wet down there and it being a thick white discharge. A few days have passed and even though I started my birth control back up after my period, since I started ovulating what chance do you think I have of being pregnant? I am also two months away from being 18 and I know you have a higher fertility rate the younger you are. I will take a pregnancy test in 2 weeks or so, I'm just wondering what the chances are that I am pregnant