Hello i m 32 yrs f, unmarried. I m having hypothyroid since june 2013, n now its hyper thyroid. Before thyroid i was positive in hutt test n detected pots postural orthostatic tachycardia syndrome. Some how now itchanged to sinus tachycardia. I m also suffering from hypotension insomnia etc. My approx. heart rate is 150 per min. At present i had severe pain in chest and along with it i felt haviness and pain on shoulders. Can u plz guide me wats the actually problem. Thanking you.