Please check the work of Dr. Rubin and read his book "Heal Thy Self it is available free on his website at www.gardenoflifeusa.com. His story mirrors your own and it may help. If you can't find the book for free let me know as I have an extra copy and would be willing to mail it to you.
Also check out the Hulda Clark and parasite cleansing forums on cure zone. Maybe something there may help you. Though I am not a medical person I believe at least for myself that many of my problems started with parasite in my intestine and other parts of my body.