you will be unable to know if you are pregnant for at least a week after sex, and it would take many weeks to cause pain in the stomach. however, if you had unprotected sex, it is a good idea to get a pregnancy test and some tests for STDs.
you are pregnant
It can last up to two weeks!! (thats only if you have a "lingering" stomach virus)
Yes, the last days of your period can overlap with ovulation.
Yes you could
It sounds to me like you need a professional opinion. You should see your doctor soon.
it normally last a few days but it could last several weeks too, depending on the bug.
no
7-10 days after your last period started
get the last 2
63 days
no no
I'd rather have the stomach ache. Kids last for years and years.