My depo symptomschanged and now i'm not bleeding at all but i feel nauseous and i puke and i cramp. am i allergic to depo? could i be pregnant

Not allergic: Your symptoms are not consistent with an allergy. It is always possible that you are pregnant (albeit unlikely) and you should get a pregnancy test.

It is VERY: RARE ( In FACT SINGLE CASE REPORTS) but pregnancy is possible ...A Pregnancy test is advised ..then a review of this Birth Control method with your Family Practitioner or GYN professional Hope this helps! Dr Z