Pregnancy scare on depo

Patient: So I was just thinking something over and it has to do with birth control. My boyfriend and I were not having sex before getting my deposit shot we were however performing oral and handjobs. I would normally have him help me and I do believe he would get some on his hands we didn’t think about it at the time when he began sticking his fingers inside of me. Of course I got a pregnancy test before I got deposit and it said negative but now that I got deposit two weeks ago and my period should have started yesterday I’m worried. Should I be worried? What are the chances of me being pregnant? I’m really worried please help.

Symptoms: No period, stress