Hi,
I too starting having problems with my blood pressure bottoming out on me 3 months after surgery. I was told this is normal and it will even out soon.. well it's been 2 yrs now and I'm still passing out.. I'm looking at decorative helmets to wear so I don't smack my head again. Yes I've been to the doctors.. the cardiologist has thrown up his hands with my bariatric doctor.. neither have any clue.. I'm now working with a neurologist. I personally have been doing some digging and found this:
POTS can be triggered by such as conditions as pregnancy, rapid weight loss, surgery, trauma, or a viral infection such as mononucleosis or Lyme disease. However, we don’t know why the autonomic nervous system malfunctions. Most people who experience these types of stressors do not develop POTS. http://www.lynnwebstermd.com/pots/
My heart rate speeds up to 120 to 130 bpm after standing up from a resting heart rate of 50 to 60 bpm. I'm trying to get my neurologist to give me a tilt table test to either rule out POTS or rule it in so I can get what I need done and move on with my almost skinny self.. (I still have 100 lbs to go but I feel better outside the fainting.)