Late Period

I’m 5 days late as of today. I had unprotected sex on NYE and was ovulating then and then also had unprotected sex January 15 and then on January 17th and 18th I had really light spotting that only lasted those two days and I haven’t gotten a period at all this month. I took a test the day before I was supposed to have my period and it was negative. I need opinions and help