I have been on the depo shot for over six months however 3 weeks ago I had unprotected sex and he came inside me while i was on my period which was very light. the following keep the same thing happened. For the past week at night I have been getting nauseous to the point that when I swallow I can taste the vomit going back down. Is there a very real chance I can be pregnant? I'm nervous because I got pregnant before while being on the pill n had a miscarriage. I couldn't bare to go through that again.