Most of the times a female is pregnant
on it is when the
pregnancy is too
early to be detected and she gets the shot while already pregnant. The early pregnancy signs (Which I'm assuming are the stereotypical fatigue, nausea, increased/decreased appetite, sore breasts, frequent urination, weight gain, etc etc) are all also typical side effects of Depo. If you really think you are, take a pregnancy test with first morning urine. However, the odds that you are, are slim.