Likelyhood of ne being pregnant?

So I’m 4 days late for my period. My partner and I had sex throughout the week when I was ovulating. I took a pregnancy test a few days before the usual start date of my period (the 13th) and it came back negative, however I’m normally never this late. Should I trust the negative or test again? And what’s the likelyhood of that negative being correct due to the time I took it?