I have recently been feeling strange pains and sensations around my left pectoral region. Sometimes I can feel it a little below the pec, near the rib, sometimes it can go to the right side of my lower armpit. None of this is very painful, but i keep thinking about, making myself worry a lot. I can feel sometimes the same thing on my right side, but lately it has mostly been my left. I can also feel an odd dull pain when i take a deep breath and breathe out. Im just getting really worried.