Am I pregnant or not....this is so frustrating!?

Had unprotected sex and he said he would pull out but he may have started to *** in me. 7 days later I had a slight bit of light bleeding for a hour hours. My breasts swelled a week later but didnt hurt too bad. I have had cramping for almost a week and a half now. I have had a heightened sense of smell, and half of the things I smell make me want to be sick. I have been nauseous on and off. I am now 9 days late on my period. I have taken 2 pregnancy tests and they were both negative. I didn't not take them first thing when I woke up though. Could I be pregnant?