hi.
you have a few options for this. You can always go with an over-the-counter laxative or stool softener (senna), but those really aren't the best for you. If you've never taken one before then using it once or twice probably wouldn't be a big deal, but excessive use can cause ALOT of problems. I, personally, would stay away from them. Can cause more problems.
of course, laxatives would only be a temporary solution. You need to get to the root of the problem. Go see your doctor or a gastroenterologist, and talk to him about it. Most likely they will give you a laxative or something along those lines. Possibly a colonoscopy.
You can also always go with some sort of colon cleanser. If used a few that I like alot. Some are better then others. Herbal colon cleansers have a tendency to make people constipated, so those may not be the best. Oxygen-Based colon cleansers, will "clean you out" and won't make you constipated at all. You can read more about these colon cleansers on other threads on this forum. People talk about them all the time.
Not sure what else to tell you. keep us updated. good luck.