"after my 2nd pregnancy i used natural birth control method, but about a year later i got my first period and surprise! i got pregnant. after my third child was born i got on the depo-provera shot. other than slight pain on the injection sight for a few days i also noticed both times after getting the shot i get moody and angry easily. (i feel bad for my family) but after a short while i usually go back to normal. i&#039;m guessing its just the change in my hormone levels."