Today I have chest tightness (which started last night), I notice a mild pain on the right side (right breast area), and, on ocassion, I find myself taking a deep breath, unexpectedly. Chest tightness worsens when I bend over (i.e., to pick something up off the floor). I'm 55 years old and I take care of my parents, so I realize it may be stress related, but wanted medical advise. Thank you!