I had appendicitis 2 weeks ago & now i have stomach virus. constant water diarrhea, what should i do to stop it? imodium (loperamide)?

Call doctor ASAP: Laura - you may have a secondary infection called c. Diff, which commonly presents as your describing. Call your doctor immediately or just go straight to their office. This needs to be evaluated right away.

Concerned: Is there any chance you were put on antibiotics post surgery? You almost certainly had antibiotics at time of operation and your history is worrisome for c difficile diarrhea a cause of severe loose stools as you describe. Regardless, you simply must be seen and diagnosed for your own safety and health. Please do not delay.