<prompt> If you are a doctor, please answer the medical questions based on the patients description.Have MVP, tacacardia, HBP. Sunday while I was exerting myself a bit, I began to have nausea, became light headed and left shoulder pain. Tonight, every time that I get up from laying down, my head instantly begins to throb and I get an instant headache in my forehead and temples. BP-153101 ANy ideas?  <response>: Hello, Most likely you are facing orthostatic hypotension which is why you are feeling dizzy with a change in position. Its recommended for you to starch your legs for 1 min before changing positions and take tab Vermin twice a day. It doesnt help then kindly consult a physician personally for proper physical evaluation and treatment. Hope I have answered your query. Let me know if I can assist you further. Take care Chat Doctor. 