My period is 21 days late and pretty sure I'm pregnant( been sleepy,hungry, dizzy, and moody) I told them there's a good possibility I'm pregnant so i peed in a cup and they tested it and said its neg. and then they said to retest in a few weeks. Then I got the depo shot (my first time having the shot) it wont mess up the baby if I am pregnant. I just am so sure I'm pregnant, my period is hardly ever off and definitely not by 21 days. My boyfriend and I were very disappointed it came out negative. Wish they could do blood testing to know for sure :(