I need help

So I need help please lol. It’s been so far like 2 weeks since ive been off of birth control. I was on it for about 3 years. Me and my boyfriend have sex unprotected an we’ve been pretty frequent having sex. I’m nervous about getting pregnant but he’s only nutted in me just once an he said it was a little bit but he’s been nutting near my vagina. Could I still get pregnant oh also I took a test about a day ago an it came out negative. An my body’s been acting weird.