I am wondering if I could be pregnant? My bf and I have never had penetration but a couple weeks ago he grinded against my butt opening. Idk if there was any precum. I have been having a lot of cramps and sore breasts. Period is due in 4 days. This morning I woke up with brown discharge when I wiped but nothing else came out. Is this implantation bleeding? Could I be pregnant? I’m very scared. Please help.