Need advice could i be pregnant.

Christian

I’m new here but my mind is driving me crazy idk what to think. My last period was Jan 28th up to feb 2nd. I haven’t had a period since. I’m 11 days late my last two periods have been 5-8 days late but 11 days idk what to think. I took a pregnancy test and it was negative but that was at 7 days late. Should I take another one? Does anyone know why else my period may be late?