Sorry to hear you're in pain now. I wish I could help in some way.
Rest? What's that? lol...
I work full-time and have 4 kids ages 5, 4, 2, and 4 months. I try and relax on my one hour lunch break and in the car..but that's about it.
I'm still in limboland/denial, so it's sometimes hard to ask people for help.
I get that feeling when I over exert myself. Right now with the pain I am in I wish the felt invisible. But this isn't about me lol. Maybe it is what you are doing during the day that is causing this to happen.
Do you rest at all during the day? I know when I don't get rest during the day I feel completly off kilter. Just a thought.