I arrived at our condo in Keystone yesterday. We drove from about 2200 ft. Upon driving up the mountain developed a headache, so when we ate lunch upon arriving at Dillon I took 2 ibuprophens and drank water. Also drank water on the way up the mountain., Went grocery shopping and started feeling ill. Told hubby I felt like I was going to pass out. He had me sit down at the pharacist area. Took blood pressure and it was 86/70. Pharmacist said that was really low.Came back to cabin and just went to bed. Headache was bad! I forgot to mention I have a little cold so maybe that contributed to all this. Feel better this morning, but kinda freaked out about all this. I read that most experience a rise in blood pressure from high altitude...not a lowering of bp. Wonder if I should go to the dr or not???