I am a 19 year old female. I just recently started getting pains under my left breast, it's an annoying pain and then it moves to an ache in my left shoulder blade. The aches and pains last for about 30 minutes and then the ache travels to my shin on my left leg. While this is all happening I still get an uneasy feeling around my shoulder blade. Even without the pains I feel a bit of a tingling sensation on certain parts of my body. (ie. my hands, legs). I am very concerned about this from what I've looked up so far online, so I was wondering if I can get answers or advice on how to come about this. Thank you.