I'm about to rip my damn uterus out lmao

Kamilah • I`m a young artist trying to discover the wonders of life..
So I took a pregnancy test (clear blue digital) the day before my period started it said no . So I was a little pissy. Now I'm 2 days late going on 3 and I'm like someone playing a trick on my either that test was wrong or my uterus plays too much. So my questions are when should I retest? Like wait a week or what? Also is the clear blue digital test a good one or should I get the regular sticks ? 
a sista needs some help ...