so I woke up normal, I was able to walk around earlier today. it was just fine until I ate something, I had last night whole grain, whole wheat pasta. And then I had some milk. A few hours later I can't even stand up, not without my heart going about 140 bpm and it beating irregularly, my chest hurts and I get a headache instantaneously. I've been crawling around the house cleaning all day, it's fine when I sit down... but if I stand up, all hell break loose. is something wrong? I feel like I'm about to die... I don't know what I should do. I have a doctors appointment on the 16th, but I'm thinking of calling in and just going in tomorrow.this is frustrating and I've already broken down a few times today... somebody just help me out here. I'm just desperate for this to be over.