How much trouble can my doctor get in for doing this to me?

Well buddy that sucks lol. You really have no rights in this situation because as a minor your doctor has to inform your parents of everything that happens. It was messed up that she lied to you tho. She probably got some THC metabolites when she took the blood and gave you the piss test to confirm. SORRY BRO. And your mom probably asked for the test after the doctor told her about the blood. I would curse that bit*h out next time I went to the doctor and then get a new one. Hope you didn't get in too much trouble.