I have cleansed many times and say keep going with the herbs and complete the cleanse.
Your doc would want to do expensive, unnecessary and unreliable tests, and I doubt that he would believe that you had parasites - most don't. Even if he did believe you, he would perscribe one medication to get rid of one kind of parasite...
Herbs, on the other hand kill every kind of parasite that you might have, (even the microscopic ones) and have no side effects even if you don't have any (which is unlikely).
Farmers used to de-worm thier kids and pets twice a year as a preventative measure and we should still be doing it. I do.