So I took a plan B on Tuesday, and then had unprotected sex on Thursday. However, my S/O did not come anywhere near my vagina. Friday was supposed to be my ovulation d-day. I woke up today, Monday, with dark brown bleeding. I have cramps like I do on my period. My period is supposed to be 12 days away though. I have no other symptoms like constipation or tender breasts, which I always do whenever my period is coming up. Could this be implantation bleeding? Or is it ovulation bleeding? Or just normal spotting? And how likely is it that I become pregnant? Thank you so much.