Early pregnancy discharge?

Currently on day 28 of my cycle. My period is 3-4 days late. Usually on a 24-26 day cycle.

I have tested negative for pregnancy every single day. I have sore nipples, enlarged boobs, weird cramping and nausea. I typically get really bad cramps prior to my period but haven’t had those cramps yet.

I am having some sticky discharge. What do you think? Could I have ovulated really late? I got a positive ovulation test on December 18th we DTD the 18th, 19th and 20th and 25th because my husband had been out of town. Still no period or sign of a period and having this sticky creamy discharge.