Could I be pregnant? (Depo shot)?

The only way to tell for sure is to do a pregnancy test. I think it is too early for you to have pregnancy symptoms and it is too early to feel your uterus when laying on your stomach even if you were pregnant but to know for sure, you need to do a test. Women who are pregnant do not feel discomfort from an enlarging uterus when laying on their stomach until they are several months along. Your period dates may change depending on what birth control method you are using. Some methods like Depo, often stop womens monthly flows or cause irregularity. I think you are probably letting your mind and fears get the best of you.

All that could be going on it the side effects of the depo shot. Backs hurting do not mean early pregnancy. And headaches are a major side effect of the shot. So is your period stopping. And the nausea. You aren't supposed to have unprotected sex right before you get the shot or the dr is supposed to do a pregnancy test. You can do a pregnancy test to rule that out, it will make you feel better.