Hello, my cycles came sep 22, oct21, nov18, and dec 16. I don't know when I ovulate but I had unprotected sex December 27,28,29 and The first Sunday of January. I thought my cycle was going to come on the 13th but it didn't I took a hpt January 14th about 6 in the morning and it was negative. My period lasted about 5 or 6 days. January 20th, I drunk Bacardi gold and when I say I didn't drink much at all, I didn't! But the next morning my stomach was hurting horribly! I tried laying on my stomach but it didn't go away. I had a water and saltine crackers then around 4:30 I ate. I didn't want to but I knew I had to. I took a nap and around 6:00 I threw up. I was thinking it was the alcohol, but I'm not a big drinker and I didn't drink much to be throwing up. I know there's a possibility to get a period and still be pregnant, and I read that some people got negative pregnancy test and their period and was still pregnant... Do you think I could be pregnant?