I pretty much have the same symptoms. Its worse for me on the left side too, but sometimes the right side can cause certain problems as well. Even deep breaths sometimes cause like a sharp pain that leaves me totally like paralyzed, cuz the pain is so strong and the more I try to breathe the worse it gets. But I figured it has alot to do with what I do during the day and how I sleep/ lie down / sit. I know not everybody can, but the best remedy is rest and not too many quick movements....those are the worst, one can be enough to ruin your whole week sadly. Hang in there! You are not alone!

yea I do, its hurts to even breath.

Ibuprofen, Clonazepam 0.25 - 0.5 mg, rest, warm bath, progressive muscle relaxation works for me for this type of pain. Have them on different intensity nearly all the time. Try to figure it out what flares the pain up, certain movements, stress, pressure on ribs (bra, sitting uncomfortable positions).

Yes. Rib pain terrible. Usually when I've been standing for long periods. Heat helps relieve it and sitting for a bit.

yes its the intercoastal muscles