Discharge *a bit TMI*

Do you still heavily discharge even if there was implantation? I’m sure I’m gasping at straws here but I had unprotected sex a few days before ovulation and then a few days later had the tiniest of brown discharge along with minor cramping but then it went back to clear-ish and very thick. I’m technically still in the fertile window but I just really want to be pregnant so I’m looking for all the signs! Also have been nauseous with headaches too.