I'm worried because my period still hasn't showed. I've taken a test and it was negative. I'm worried I might have pcos or something. My periods are usually very regular. Never have been 5 days late & glow is always right on the spot. Idk what to do. Two of my friends just got diagnosed with pcos. One had very irregular periods but the other had pretty regular periods and went to the doc when she missed one & they told her she had pcos. Shouldn't a pregnancy test show positive by now if I was?