While I understand the expense involved, no alternative to a real diagnosis. I beg to disagree that you are capable of self-diagnosis. Many who claims they see parasites in their stool have the foggiest idea about what they are talking about.
Self-diagnosis needless to say is risky, given that one will take whatever meds they think is right, not knowing which is to be targeted with what meds.... There are so many examples of such cases here. Learn from them. And stop wasting time self-diagnosis. I my experience, such natural remedies are of little help. Yes, just some temporary relief, but not lasting... in true eradication of what you have. I hate to say that many of the new age practices like eating "raw" things are the sources of infection.