depo ??

Hey girls. So I've been on the depo for two months now. About two weeks ago. Maybe middle of January my hub has always pulled out but just a little drop slid. And these days I've been cramping in my lower abdomen feeling little bubbles. Feeling sick and nausea. I took several tests and all negatives. I've been hurting in that area and feeling really strange. Is it my paranoia or should I be afraid ? I've been stressing so much I need help