Idk if im pregnant

Deanna

I've been hot and sweaty I'll day by boobs hurt my back hurts a little I'm tired I have cramps and nausea I had sex last Thursday it's only been three day but we didn't use protection I'm not on any kind of birth control so anyway he said he came on my under wear but there was no wet spot on them he wiped something off of me so do u think there's a chance he came inside me and I could be pregnant