Could diarrhea replace sickness in early pregnancy?
If you have had diarrhea for two weeks you should see your doctor as you could be de hydrating. This is not normal in pregnancy or in a non pregnancy state. Diarrhea means you lose body salts which in turn can make you ill, if you are this bad then you need medical help. It sounds ot me like you have some gastric sickness infection, pregnancy symptoms would not appear the day you have sex, so unless you have contracted something from your partner you are sick. See a doctor.