I'd tell your doctor you have stomach pain, and drop the cannabis for a while and see where that goes. He may have you get your gastrointestinal track checked, who knows, you may even just have a simple over-active acidic problem... Solved my one pill a day for the rest of your life, lol.
Thank about it - you're body is going through real issues right now. Sure, for now they are minor and shitty incontinences but why let them get worse? Getting high is not worth your health, and you do not even know for fact that it is the pot (perhaps your dealer is doing something like using RCs, if you always use the same dealer). Take the break and take note of how you feel, if you get better as days go by without usage, I think you have at least part of the culprit and should still get your stomach looked at.
Drop the cannabis first for a few days. They will be shitty days but do things you've been putting off. We all have shit we put off. Good luck, I hope you actually give stopping for at least a week a real shot, it isn't too tough besides sleeping issues, and I'm doing opiate w/d right now and trust me, the pot w/d was a walk in the park compared. Again good luck, quitting anything is very mental so have the right mindset. Check the Quitting Thread. I may merge this there later depending on how it progresses.