Hi I had my first depo contraceptive injection on the 23rd of nov but hadunprotected sex the same day twice and the day after 2 weeks later I spotted for 3 days but nothing since. I have been feeling very nauseous towaroath certain foods that I normally eat and have had tingly breasts I have took 4 pregnancy testearl first thing and 2 later at diffrecent days but they are coming back negative I was wondering is it possible I'm pregnant or am I over reacting please help xxx