I feel your pain. Please see a doctor and heed their advice. I took 8-12 Imodium per day every day for two years - I was trying to PREVENT the cramping and diarrhea that I commonly got that was ruining my life! Well, two years later I had a major terrible episode. I hadn't been having bowel movements anymore and ended up so ill I had to call 911 because I couldn't stop vomiting. I'm now 3 weeks weining off the Imodium and on a gluten and dairy-free diet that my dietician believes will be my miracle cure. It's very easy to try to rely on Imodium but the crappy [no pun intended] part is that sometimes no amount of Imodium will stop it... sometimes for instance, if it's stress causing the problem, you will need to find some sort of outlet for that stress that will allow you to feel better.
Good luck!!!! and know that you are not alone.