What Causes Persistent Pain In Abdomen Along With Diarrhea?

It s kinda a long story and a little nasty, but lately it seems like my stomach goes back and forth and I ll have unexplained diarrhea and stomach aches and my wife thinks I may have gotten something from being in Punta Cana on our honeymoon this past August . Honestly, I m probably fine, but I have done research and found that you can get parasites, usually microscopic in size, and they can mess with your bowel movements and what not. I learned just about everyone has parasites within them at a time in their life and they can come from foreign countries or even in US from uncooked meat or vegetables and fruits. Good news is that it s never really serious unless you are like deathly ill and losing a ton of weight and getting sick all the time, ive seen simple natural ways to cleanse your body and I saw Walmart and Amazon sell parasite cleansing pills and the reviews were great for some of the products and people said they didn t even know they had parasites so for all i know l could have had one at one time but my immune system could ve fought it. Anyway I was starting to get convinced I should take a parasite cleansing pill and maybe it would help who knows, wondered what you thought and right now I m just trying to take a lot of vitamin C to clean myself out