Could you please take a picture of anything that might be a clue and post it here? Your scar, or anything under skin, marks on skin, lesions? We can try to ID what you might have.
Yes, the great discovery. We all have such high regards of the medical world, the mighty doctors. But they simply do not treat parasites. For them that does not exist. This is the real world and not what you have thought since you were a child. You need to figure it out, unless you find a doctor that can do his job and has balls. I think there are not many.