Hi, im in need off some advice please

I had unprotected sex on the 2nd off November. My period was due on the 7th but never arrived, making me 11 days late today, which is odd for me as i also suffer with very heavy periods!! A few days after sex i had some spotting, only a small amount off light blood when i wiped,  this went away quite quickly. I did experience some cramps, which i thought was my period coming, but it didn't! I also experienced very light pink mucus discharge once when i wiped, no more after that. Iv done a few tests but all show negative. What now? Thank you