I have been having unprotected sex with my bf a lot for the past 3 months. I was 10 days late on my period last month and the it came but only lasted 4 days and i normal last 6 to 8. and i changed it every 4 hours to see if it was bad but when i seen it it wasn't even half full. well i have been very nauseous at different times sense my period. This morning i ate two pieces of cinnamon toast and drank some coffee with milk and sugar. i started feeling a little nauseous and the a girl sitting beside me pulled out a sausage biscuit. i smelt it and the it made me want to puke. but i ignored it. and about 3 min later i couldn't anymore and went to the bathroom and puked. i was then shaky. well i got over that the lunch came around and i ate some rice and it made my tummy hurt but thats it. i have been peeing a lot more then normal. i have woke up 75% of the past two weeks in the middle of the night to go to the bathroom. i never use to. i don't know if my body just has something going on or what. do you think i could be pregnant?