Hi, I am a 26 year old young women who was born with a heartdifect. I had an operation at around 2 years of age. I have been living a normal life since but since last year i have had 3 very strong cold flashes/chills which last around 10mins. I suddenly feel cold, then my arms, jaws, legs etc will shake leaving me without any controll of my body and my lips turn lighly blue. It feels like i am dying as i can't breath properly and 4 thick blankets and warm clothes wont help only hot drinks and waterbottles and all the blankets and clothes etc will get me back to normal temperature. As i am still very young i don't know what these cold flashes could be, any advice would be appretiated. Thanks