Hello I Am Donna And I Have Been Throwing Up

Hello I am Donna and I have been throwing up a lot this past week and it has been miserable. Tuesday I threw up about 12 times and got sick another 3 times. Also last Wednesday I had unprotected sex and I also was a week late on my period. And the throwing up and sick feeling has not stopped. I have noticed i am bleeding a little but not really cramping at all. Could I possibly be Pregnant ?