My boyfriend and I had an unprotected sex 7 weeks ago. After a couple of weeks (after we slept together), I noticed a white, odorless mucus in my panty. I started feeling dizzy but no vomitting and got sick twice. On the week I expected my period, I feel mild cramps/bloated but no blood came. I am now 3 weeks late and having some light brownish discharge and a few spotting (small pale blood). Last night, I noticed a small blood clot that I thought is the beginning of my period but nothing came. I took 3 hpt but all came negative. I have usually a normal cycle before it happened. What's going on? I'm so confused. Is there a big possibility that I'm pregnant?