Loose motions for a month with abdomen pain

I'm 40 and I have loose motions for more than a month now, I feel like pains all over the large intestine part and around the naval as well. Pains are not in one location and are often on and off for few days, motions are sometimes regular and suddenly watery.

What could be the reason and what is the remedy? Please help.

Loose motions for a month with abdomen pain