I am having issues with chest pain, shortness of breath, feeling tired all the time, hunger, weight gain, bowel movements, different heart rates and heat sensitivity. For the past 8 or so months I have had problems with shortness of breath. It started out just with exercising. The amount of time I could run without feeling out breath kept getting shorter over time. Then I started feeling short of breath by climbing stairs. Within the past 1-1.5 months the shortness of breath has gotten worse. I am short of breath by doing things like walking a track for 30 minutes, unloading dishes in the dishwashers, or other small daily activities. It is also worse when I am lying down. Occasionally my chest would feel a little tight when I would go running, but as of Friday it has been hurting a lot. It feels like someone is pressing really hard nonstop from the inside of my sternum. It hurts when I touch my sternum too. Lying down and taking deep breaths also makes this worse. It doesn't feel good when I stand either. Sitting up in bed helps in feel better, but only a little. Sitting in a chair is where i feel the less pain. The pain lasted for 4 hours and then felt better, but wasn't gone completely. It came back more again yesterday and has been here today as well. There was one point where I barely felt anything, but it's back again. Within the past 2-3 weeks my heart just feels like it is racing a lot for no reason. And after doing small things like walking to the mailbox, taking my dog out, and household chores makes it feel like my heart is pounding very hard in my chest. Lying down makes it worse too. The feeling tired started a few months ago, but for the past 1-1.5 months I feel dead tired. It doesn't matter what time i go to bed, wake up, nap, or anything. My eyes always feel really heavy, but I still have energy. The hunger issue started over the past few months too. No matter what I eat or how much i eat, i always feel hungry right after I eat but I don't eat again. I have also noticed my appetite has decreased within the past few weeks. Even though I haven't really changed what I eat, I have gained 8 pounds within 3 weeks. And within the past week or 2 I have been having more bowel movements. And my sensitivity to heat has gotten a lot worse and I sweat a lot more and easier. I can take a shower at night and the next afternoon my hair will be greasy. I have an appointment with my doctor this Thursday, but I've become a little worried because of the chest pain I've had since Friday and wondered if i should go sooner or if it's even a serious problem.