Could I be pregnant? In serious need of a real answer ladies!!?

I have a regular cycle every 30-32 days. According to my ovulation calendar on my phone, I was to ovulate anywhere from the 4th to the 12th of this month (February) My periods are like clockwork and i have the same two symptoms every time I get my period. Slight bloating and a couple cramps. On the fourth and fifth my boyfriend and I had unprotected sex every other time he has pulled out. 8 &9 days after the unprotected sex i woke up and threw up and had a bloody nose. Then I was fine for two days. The third day after that began I began feeling really bloated, horrible headaches, exhausted, sore breasts, sore back, spotting pink and brown not heavy two weeks after the sex in question, cramps not by ovaries but in abdomen, horrible nausea, I either cant eat or i'm really hungry, and a nerve in my stomach twitches whenever I lay on it. My period is not due until this coming thursday. Could I be pregnant and have those symptoms that fast or am i sick? I have been eating and sleeping the same, no drugs or alcohol, no emotional stress, I do smoke cigarettes. Please help!!!