I currently feel a stabbing pain in my left chest/shoulder area and it's coming in waves. I don't feel like it's a heart attack. It feels more like i'm being physically cut on the inside. It hurts very much and I don't know what I should do. Also, my hand feels weird, but that might be because I was recently resting it weirdly and contorting myself due to said pains. I'm unsure of any other symptoms but my hand feels tingly, a bit painful like a dull throbbing, and mildly numb. Like I stated before i might've just done something weird to it, but my shoulder/chest hurts a lot. It feels more in the muscle or bone than a joint or anything.