Helppp!

So I got my nexplanon implant taken out the 16th of February. Too many issues with it, I couldn't handle it anymore. I started taking the pill that day, but I know it does start working until a week or so of taking it. My boyfriend and I had sex on the 20th and the condom broke without us knowing (we were really drunk). My periods were so crazy I don't know when I ovulate AT ALL but I do know you're more fertile after getting off a birth control! The past week I've had slight cramping, mainly localized on the right side, my boobs are tender and getting to the point where I don't want to touch them, backache, fatigue, ewcm, and mood swings out the whazoo. Is there a possibility I could be pregnant, and if so, would it show up on a test on the 18th of this month when I go to the gyn?

Thanks in advance <3