Cervix position and potential pregnancy


My cervix is high, hard like the tip of my nose and I think closed? I cant find the opening tbh. I'm 3 days late and I did let my man come inside a few times after I was done ovulating. Should I wait a few more days to take a test or what? Were not Ttc, and the last time I took plan b it messed with me pretty hard. Last month I was 10 days late but still got it hard and heavy. I could use some advice because this is not helping my stress levels.