Oh goodness!! You poor dear!! I always say, if you have good health and cleanliness (a.k.a. washing every time before you eat)then you probably were first initially infected when you were a toddler! HA! :D My kids....oh man, everything goes in the mouth! We actually got infected by a puppy we brought home form the pound!!! AWFUL!! But we have traveled and things (most people don't cook their meat the way it should be cooked and get infected that way), so we could have picked up a number of things from anywhere! Don't feel bad! It's quite common for people to have parasites...and like the humaworm website says, it's their job to hide!
I would do some research on the enema...I did them my first cleanse because I was SO backed up!! I didn't pass any rope worms but I did pass a HUGE mucoid plaque thing....I got REALLY sick up until that passed! I think I read that the coffee enemas are good, however if you are sensitive to caffeine (like I am), then a normal fleet enema will suffice!