Maybe??

My boyfriend and I had "sex" on Halloween (when I put sex in quotation marks it means he only stuck it in me like a couple of times b/c I wasn't wet enough) (sorry if that's tmi). Anyway, we didn't use a condom but i was on birth control for 4 and a half months at that point (I'm still on it). It's now been like two months since that last happened and my only "symptom" so far has been constipation, some sore breasts. Some bloating but I've been eating junk food loll (no cravings or excessive eating). I got my periods (both of them so far) and they seemed heavy and normal enough. Could I be pregnant? I can't buy a test cuz I don't have a car sooo yeah haha