So I went on and did a 14er, I live at 5000 feet in Denver. And got a absolute massive headache coming down. Felt like heat exhaustion almost but I drank plenty of water I still drove home just feeling tired. It’s been a week since then. I talk and walk normal but have had a headache everyday since. I have felt sluggish and tired but nothing serious I suppose. Still going to work. I got so worried I went to urgent care and was pretty much just roasted and told to take ibuprofin. I never ever get headaches and I’m a very fit person. Just wondered if any of you have felt these symptoms of a week long + headache of sluggish feeling. I’m a big runner and love to stay active but I’m very worried I have a serious condition the Doctors are shrugging off. Any help would be appreciated.