My period is late

I didn't stress at all. But My period is late, I was supposed to bleed today.... Yesterday I checked my cervix in the bathroom, I couldn't feel anything. I thought maybe I can't try and check myself. I did a pregnancy test a week ago, and it came out negative. I didn't have sex or anything, only a weird dream, but maybe that dreams means something... Something is up guys. I'm waiting another week for my period, maybe it'll be late. its been 29 days already...