Help! Rare Parasite infection.

"Please Help. I am desperate! In 2005 I contracted a rare or unusual type of gut parasite. Most likely, this happened when I was treating newborn puppies for a bacterial skin infection. The first symptoms was a pinching sensation next to my bellybutton, but that evolved into more severe symptoms including severe pain in entire gut, chronic fatigue, flu type symptoms (head acess,runny nose,joint aches,etc...). At first I was sure I had cancer but every test came back negative. I have tested for crohn's disease, IBS, etc... I have had every test that my GI doctor can think of. All negative. There is evidence of erosion & inflammation throughout. Sometime later, a friend suggested that this might be a parasite situation, so I started doing research on my own regarding parasites. I found natural remedies for parasites such as Paragone and many others in health food stores and on line. I also learned that certain foods should be avoided( sugar, yeast, vinegar, etc...) I started taking the herbal remedies and I did a radical diet adjustment. I did start to feel better after a couple of weeks. It has been approx. 6 years since I started treating myself. The steps that I have taken are not enough to cure this problem, but it does keep it under control somewhat. It was explained to me that my efforts are just inhibiting reproduction. But they will never completely end this nightmare. After all this time I have had plenty of opportunity to test my theory through controlled experimenting. From time to time I will stop taking the remedies and stop avoiding food groups just to be sure that it is not some kind of a coincidence. Every time I have tried to do those things my symptoms come back, full blown, every time! So, that proves it. THIS HORRIBLE CURSE HAS DESTROYED MY LIFE! I am so depressed and with no end in sight. I don't think I can do this for much longer. SOMEONE, PLEASE HELP ME BEFORE I KILL MYSELF! I am wondering if there are any "smart" doctors out there that can help me to identify what species this is and how to treat it?"

William