M.P.
Hi Chely! I think the symptoms may be from the shot. I was on the depo shot for 6 years and I went through all the symptoms you described. I wouldn't worry about it. Your cycle may just be out of whack because of the hormones from the shot. If it makes you feel better, take the pregnancy tests, but I'm sure it's just the shot's effects leaving your system. They say it takes a while for your cycle to get normal again. Good luck!