I have a question

Hi guys!

So I am suppose to be on my period this week (like today and I haven’t started) but lately I have been feeling very nauseous and my boobs are more sore than usual when I am about to start my period and this is the first time I feel nauseous around my period time. But 2 weeks ago my husband and I had unprotected sex and I was ovulating that week. I took 2 pregnancies test and they came out negative, could I still have my period and be pregnant or is it too soon to tell?