AF came 3 days early, supposed to be the 9th came the 7th. lasted the usual 5 days. usual flow. I believe I ovulated early (its happened before) we had sex the day I started and the day it ended and then 2 days later. last Wed I started spotting light pink, and then a light brown discharge. the spotting lasted 3 days. I have had mild abdominal cramping yesterday and today and these outrageous headaches. I supposedly began my fertile week 2 days ago. I had sex yesterday. does anyone have any thoughts as to what this could be? I've never had spotting or anything of this nature before. if I did ovulate right after my period, the time line for implantation bleeding lines up. Sperm would have still been present every time we have had sex and then had sex again.