I'm not really sure...But my first time I was really paranoid too...I thought that I was pregnant because I didnt have my next period for a month and a half...But I went to my doctor and she said not to worry because the first time may mess up your cycle...Especially if you haven't had your period very many times yet....Up to a a year is what she said.......Sorry I know that wasnt much help...But I wouldnt be to worried if I were you...Good luck....And be safe

Stress and anxiety - that will seriously mess you up - it will make you miss or it can make you late because the more you think about it the more your body reacts to your thinking. The best thing is to take a test or just wait until it time for your next period. But calm down, and try nto to think about it too much, good luck hun if you need to talk i'm here!! ~misty

that's exactly....

It's like the most u think and stress about it..The later ur periond;s gonna come.

Hi everyone! I hope someone out there might be able to ease my mind. After having my second child my periods have been here and there. Well, today I took a pregnancy test and it was positive. I am fine with that. However, since my periods are all over the place I cannot remember if my last period was in December or January. I want to know if there is anyway my Doc. can tell how far along I am and when I am due. I know that they normally go by your last period.. I dunno when mine was?? Can they due a blood test? My insurance are a bunch of cheap-skates, so I doubt they will do a sono-gram for just determining how far along I am. ughh.. thanks to all that might reply.