I have been having really crazy mood swings for about the last month and a half, mild cramping through that time, nausea spells, dizzy spells, been going more frequently, constipated but have diarrhea at the same time, very sleepy, my boobs hurt insanely bad, and I'm a month late on my period. I've taken three tests and all have been a very strong negative.... but I still feel the same symptoms I've been feeling. I had gotten the depo shot June 28th, 2016 but in September I didn't go to my second one. Could that be a reason why I'm feeling like this too?