hi I m quitting smoking and new diet, I been having intense muscle tension, dizziness, and hot flash. the hot flashes go from head to toe and last for about 5 to 10 seconds. the muscle tension last a few hours. the dizziness happens off and on. when this happens I have to poop 1 to 3 times for the first hour or so. I feel nauseous. while this happens I try to eat and drink to help. than I pee a lot while this is going on. this all started after I was on an air plane and thought I was having heart attack, but was not. the doctors say my heart is great and blood work is fine. so I assume I m having bad anxiety attacks. any thoughts would be great