I am a week late on my period. I have not have sex, but about three weeks ago I had a heavy make out session that included dry humping (all with clothes on). I have very sore breasts and a little naseua, and I have slight pains in my ovaries. I thought it was signs of PMSk, but then got a little nervous when I had no period. So I took a pregnancy test when I was late 4 days, one the next day and then waited and took one yesterday morning first thing. All were negative. Could I be pregnant? What should my next step be if I have no period and symptoms continue?