Those pinworms from your childhood were more than likely ascaris. Pinworms will not cause the life-long symptoms you have described - BUT ascaris will. I think this is what you have been seeing in your poo.
Ascaris larvae are small and can look like pinworms - when they are older they look like white earthworms and when they are fully grown, they tend to get stained various shades of brown (from the stool). They can cause extreme hunger with weight gain - especially when they are well established in the body.
Your body is responding well to the cleanse. Just finish the 30 days - then wait 90 days and do another one. Doing too many cleanses too close together can cause resistant parasites. Here is an old post about resistant ascaris: http://curezone.com/forums/fm.asp?i=735294#i
I know it is hard to wait - but the risk of resistance is very real.