Hello, I’m 17F, average weight and height, probably suffering from anxiety and depression but I’m not diagnosed, I don’t have any medical issues, I’m sleeping enough but very late atm. 
I’ve been having left side (slightly below the heart I think) chest pains today and they were the strongest I ever had. I’m having them kind of often probably because I’m always anxious but they were minor. Today they were strong for 5 minutes and I wasn’t able to breathe entirely or it hurts. Now, a few hours after, it still hurts a little. It feels like a vast sharp pain or like tightness. I’m gonna see a doctor soon but I’d like to know what it could be. Thank you