Pain In My Ribs/chest

Hi, I am 16 and I have a few issues:

I have had this pain in the left side of my rib cage (just under the left breast) for about 9 months now. It is sometimes just a concentrated knot of pain, but at times it surges down through my left side or through my chest to my back. This can last up to 30 minutes.

I also get an obnoxious sort of stretching pain around my right clavicle and right side of the chest, but it's much less noticable and goes away after 10 minutes or so.

Other issues I have include heartburn, pain in the stomach usually immediatly after or a few hours after a meal, an nausea. I wonder if these symptoms are all related or not.

If you can try and diagnose me i'd be very grateful

Thank you!