Could I be pregnant?

On January 30, 2008 I had my period. I had unprotected sex for the entire weekend of February 3- 5.  I am not on the pills, however, my boyfriend withdrew each time he was about to ejaculate.

My cycle usually last for 4 (lenght of menstruation) days, however, my period started on Saturday, February 23.  Last night, I started having upset stomach and I threw up.  Today, I have not vomitted, but my stomach is feeling a bit upset.  

There hasn't been anything else that have seemed out of the ordinary (signs of pregnancy), but me having threw up last night, has made me very nervous.  Oh, I must add, that, I forced myself to throw up because my stomach was upset and I wanted to get out what was in my stomach in order to feel better.

Am I just being paranoid?

[Bambi1979]

Girl, you know better than to think the pulling out works!!!  I don't have any kids, but I know better than taking my chances with "pulling out."  I agree with Hensley, you should go and get a pregnancy test.  Don't get the cheap ones though, get like an EPT or one of those name brand ones that are a little more expensive!!  Good Luck and stop worrying until you get your results.  How old are you?  If you and your boyfriend don't want a child and if your are not pregnant this time, then I'd suggest not using the "po" method anymore!  Not only do you have to think about pregnancy with no protection, but you also have to think about diseases that one or the other may have that doesn't show up for a few years, like HPV or HIV.  It's always better safe than sorry!!