24 yr old male. cholesterol 245, ive been having this left side chest pain for about a yr now. ive had echo,ekgs,stress echo,holter monitor, event monitor, and blood work. i also have been experiencing pac's and pvc's. all my test were normal besides the event monitor which showed the pac's and pvc's. today me and my fiance was about to eat at a restaurant and i started having the severe left side chest pain, radiating down my left arm and into my left hand, was sitting at the table and couldnt eat, felt to bad, and then is just went full blown, severe pain, cold sweats, feeling lightheaded,about to pass out, went to the ER, bp was 150/100. O2 levels was 100%. they did chest xray, urine sample, blood work, and ekg, said everything was completely normal. by the time i got in to do my ekg i was already feeling better. im still having the pain in the same spot right now on and off, with about 2 min breaks in between the pain, its localized on the left side of my chest, like right over my heart. 1.could this be Prinzmetal's angina? im also wearing a wrist heart rate monitor and my resting pulse is around 60-70bpm, and when i stand up it immediately goes to 120bpm and then, immediately back down to 60bpm, and that makes me feel faint and weird. what does that mean? my heart rate goes all the way to like 135bpm from just getting off couch and walking to fridge. what kind of significance does it have since it will shoot up that fast and then back down in a split second, not gradual?? does this indicate anything? a more increased risk of SCD? (because i have frequent multi-focal pvc's) this will also wake me multiple times during the night. thanks so much