You really need a doctor now. Go to an urgent care clinic or ER. At the very least you most likely need rehydrated with IV fluids and medication to stop your symptoms. You may have anything from food poisoning to C-diff. But you do need a doc to get diagnosed now.
Diarrhea that has lasted for anymore then 48 hours should be addressed. If you are experiencing diarrhea symptoms continuously you should seek medical attention. Your body is losing fluids rapidly and you will if not already will become extremely dehydrated.
I agree with kimber and neighborlady (whose name I have typed enough times on my phone, that it now pops up on predictive text)
This is not an ordinary case of the runs, and you're really risking severe dehydration if you don't get it handled right now. The doctor can give you something that will dry you up immediately, but you've got to find out the real cause of it.
And don't drink apple juice, it will make it 100X worse.