monique is right. Try some of her suggestions and if there is any way possible that you can stick it out for the remaining 2 weeks - please try. Some types of parasites attach themselves to the intestional lining - when they are removed from the body - they leave tiny holes (open sores). These sores will heal, but the intestines might be a little sore for a few days during the healing process.
This is why HUMAWORM contains marshmallow root - it gets very stick and gooey when wet - just like a marshmallow - this goo sticks to and coats open sores in the stomach and the intestines to protect them while healing.
Try to avoid acidic or spicy foods for a while - this will help too. I hope you can finish the cleanse - but if you can't - well, you just can't and that's O.K. too. Some cleansing is better than none at all - but the full 30 days is best. Good luck and let us know how you are doing.