I would recommend you do a colon cleanse. A parasite cleanse will remove most of the worms, but it's still very important to clean out your colon. I am not sure what the Master-Cleanse is?
I took a product called CleanseSMART from the health food store and started to pass pounds of this rubbery fecal material. It was not until I started to pass this stuff that my stomach felt less distended and blocked. I still have a while to take it. It is not a laxative, but it will flush out your intestines and should remove buildup and any blockages. I had very little cramping on this, so I hope it will not effect you in a bad way.