Can you get a false positive for Blastocsytis?

I think this explains it well. http://www.mayoclinic.org/diseases-conditions/blastocystis-hominis/basics/definition/con-20026572
According to the mayo clinic it can go away on its own. Science is not clear on whether this parasite is the only reason for symptoms since the intestines are often invaded by different parasites, or harmful bacteria, that can be present at the same time.
This is the first time I’ve heard of this parasite but a good doctor will not want to jump the gun and give you medication that may cause other side effects. Especially if they feel there is no proof that it is needed. I read the symptoms, and there are a ton of things that can cause those side effects. All IBS diseases can cause all those symptoms. Have you been checked for that? You may simply want to change your diet and see how that works.

I have tried changing my diet and sometimes it’s great and other times – after having a day of eating super healthy it’s gross again!

I’m at a loss to understand it – it’s not bad, just loose but I miss my proper poops – i liked going to the toilet and now I fear it!

I hear you, I guess i need to do all the elimination of other suspects before going down treatment route.