This also happened to me after eating garlic for 5 days. Very bloated and a couple of scars formed on my right hand wrist and my right arm from shoulder down lost some mobility and felt like something was slithering inside.
The way it works is that once you are cleansing the body, the herbs or whatever you use will get into your intestinal tract and bloodstream. Then the worms will feed of these, because that's how they survive, by stealing the nutrients from you. Depending on which herb/drug you administered, the worms may become either paralyzed, become frantic and look for an exit (which is why you've gotten these scars, as they are desperate).
You scars, with time, may disappear, or lessen to such a degree that its very barely noticeable.
You may want to look into stronger alternatives though. You don't want to paralise or hurt the worms. You want to kill them.