Depression Support Group
Depression is a real and debilitating condition that is often misunderstood by family and friends. Its meaning can range from a prolonged period of sadness to an actual mental illness with specific symptoms. Find and share experiences with others who are going through the same struggles.

Go to the doctor or ER... Immediately!!
No one here can offer any legitimate advice, as we obviously aren't trained professionals, but honestly... you certainly can't allow this to keep happening.
I would ( if I was a professional and knew your medical history) suggest that you in the meantime take some Imodium or something similar... but that would be quite premature without knowing what you may be allergic to, etc..
Best of luck.
In the meantime I would advise you buy some Tenna pants for reassurance. They really do contain stuff, particularly if you need to travel any distance to get to the doctor's office.
Don't be scared to tell your doctor; they really have seen it all.