Symptoms or all in my head..?

Got positive opk on 23 jan and BD that night...then on Monday and yesterday was feeling quite crampy...yesterday mid afternoon felt sharp pain on left side (felt ovulation pain on same side a week earlier), cramps subsided after that and not felt much since. Today was nauseous in the morning and had some breast pain with nipples feeling stingy and itchy? I’ve had no spotting or much discharge, and today hpt was negative. AF is due 7th Feb. Really don’t want to get my hopes up but could this be something?!