Hi. My last period was Oct 18 2006 and I had sex on the 7 of November. We used a condom but I have been having strange symptoms lately. I have been getting mild headaches, not very frequent, and I have been getting small cramps. Also, my hands are very shaky. My period is supposed to be around today or tomorrow and has not come yet but I am slighty irregular. I am very very stressed that I could be pregnant, is that causing these symptoms?

Stress could very well be causing these symptoms. Stress will also cause your period to be late.

Stress does a lot of strange things to your body. So, if you are really concerned, take a HPT or go to the doc and have a blood test done.