Could be caused from falling,
Heavy lifting or even coughing. Right now, I’m dealing with it too. I didn’t sleep well & was coughing last night & woke up with it this morning.
Feel better!
I would try ice & heat
God bless!

Hard to breath. Pain on sides and chest and back. Hurts to move at all

I don’t have any more answers than the above…hopefully you’ll feel better soon 🎃

It is a feeling like you are having a heart attack it can be very severe pain and rib muscles tighten so much it affects your breathing heat and rest helps.

Karen I'm so sorry to hear that I hope you okay 🙏 xx