Over the weekend had extreme loose diarrah where I could not even make it to the restroom. Also for the past 4 years (since I had my son) I have had horrible gas pretty much all the time. What could be wrong with me? Should I suggest to the dr that I want a colonoscopy?

You need to go to the doctor... but a colonoscopy likely isn't going to be called for... if it was only a few days... now if this goes into weeks, then it's a different story... as unending diareaha can be a symptom of colon cancer...

THey will likely give you pills assuming over the counter stuff wasn't working...

As far as the gas... its likely unrelated... however they can run tests... it could be diet.. or that you have become lactose intollerant ( it does happen)... or a number of other things... none of which can be diagnosed over the internet.