So..
I ovulated on Tuesday. Early (CD9), but had a positive OPK and lots of EWCM. Had sex on Monday, Tuesday and Wednesday.
After sex the following Sunday (so I think 5 DPO) I had pink spotting, also a small amount of very brown tacky cm the next day. I'll know soon enough, but any thoughts on if this could be implantation? Have twinges in my boob now but that is not very unusual tbh.