Chest pain/Light headed/Short of breath
I'm a 20 year old male. 6'3, 205 pounds. I'm not in the best of shape 'cause I don't really do anything (mostly because of how fatigued I always am, and going out makes it worse). I don't have a job and I do a lot of sitting at the computer. But I don't eat terribly and I'm not obese. I drink mostly water or crystal light.
I'm always overwhelmed by fatigue and have been the past several years, though it has gotten worse. I started working out 2 weeks ago to try and change that and feel better. I've been doing 45 minutes to an hour of walking every day. Except on the weekend. The past week or so I've been having bad chest pains. I'd say it comes and goes through-out the day every day, and is just sometimes worse than others. But there have been two instances where it's been particularly bad. A few nights ago, and again tonight. What makes these times worse is that I'm also pretty light headed and it feels like there's a stack of books on my chest making it hard to breathe. I always have trouble breathing though and have ever since I can remember. So I'm not sure if it actually is worse at these times or if I'm just more aware of it because of the other symptoms. The chest pain is sharp/stabbing right in the middle and it also just feels tight and, like I said before, there's a heaviness on my chest. It's normal for me every once in a while to get chest pain if I get too worked up but recently it's just that it's constant and worse with the other symptoms so I'm worried.
I'm also just really sore everywhere since I'm not used to working out. But I've done this countless times the past few years where I try to push through it and continue working out and it never gets easier so I always quit because of all the discomfort. Although, it's never before given me chest pains like this.
I smoked heavily from the ages of 14 to 18. I could smoke up to a pack a day. My breathing was already bad and that made it worse which is the only reason I quit (it scared me).
I don't know if this is relevant, but there was also a scary incident a couple months ago. I was playing with my nephew, running him up and down the hallway because it made him laugh hysterically. It's a short hallway and I only went back and forth 4 or 5 times. And I was barely even running because it was inside and I was holding him (he's 1 y/o btw). Anyways after this, my heart was pounding so fast and my breathing was so bad at this point that I had to go to my bed and lay down. I had a cold sweat and my heart was about to pound out of my chest. I was taking really fast breaths and it felt like my lungs were doing that on it's own. I had to lay there like that for several minutes before it slowed down and I was able to get up again. That pretty much happens any time I run or get too worked up, which is why I don't. It's also happened as far back as middle school.
I'm sooo sorry this post is so long, but I'm big on details and I'm just really worried. Thanks for reading.