Hi,
I'm 22 years old and very very upper chest pain. I've been diagnosed with costochondritis, but this is further up and to the left (not at all near heart). It's very inconsistent, it happened yesterday eve and then again last night and in the shower this morning. Not agony at all, quite mild pain, kind of sharp & achy? My paramedic friend reckons it's muscle pains?
For context, I have severe hypochondria as well.