Hiiii, I'm seventeen years old and I've been with the same guy for four years. I've been on birth control, but I quit taking it about six months ago. My period finally became regular about two months ago. Anyways, we had unprotected sex four times after my last period in august. I have not yet had my period for September and I'm about five days late. I took a pregnancy test two days, and it came out negative, but I still haven't had my period. I'm really tired lately and I've been feeling a little sick to my stomach. Also I've been getting really turned on lately and this morning I had clear sticky/stretchy discharge. What could be wrong and what should I do? I'm really freaking out and I'm in no way ready to have a baby. I just graduated high school. Please help me.