"stomach flu" for over 3 weeks or possible morning sickness?

Pregnancy is a possibility. Another possibility is that the prednisone wiped out the good flora in your digestive system causing the flu like symptoms. If you pee on a stick and it comes back negative you can eat yogurt with live cultures in it or get some acidophilus from your local health food store. But make sure you get the refrigerated variety, it is much more effective. This will introduce the good flora back into your system and restore digestive balance. Eat the yogurt, or take the acidophilus, before every meal about 15 minutes so it can coat your stomach, for about a week and see if that helps. If there is no improvement, there may be some other issue going on and you may need to go back to your dr. I hope you are pregnant too! Baby dust!