Well its nap time. Any good advice on how to sleep with broken ribs?
Yup, coughing, laughing, sneezing and worst of all (since it keeps going) is SHIVERING. I was fortunate enough to not have nausea inducing pain killers. So I do feel your pain.
In 97, a tankslapper threw me off at 140 (90mph). Aside from assorted internal injuries (including a punctured lung by one of my ribs) and stint in the ICU, I had 3 broken ribs and lucky me, both collar bones were busted. So I had virtually no use of either arm.
When I finally got out of the hospital, on my back and heavily sedated was the
only way to go for sleeping. And with no arm use and the resulting lack of being able to use stomach muscles thanks to the ribs, the only 'easy' way to get out of bed was my girlfriend putting her hands behind my neck and lifting to sit me upright, with my tensing my back muscles to keep my back straight. She'd then swing my legs over out of bed, then I'd lean forward just enough to be able to get up - that was it for the day.
I too did LOTS of slow, calm walking, with my rib brace and that stupid 'bra' for broken collar bones visible outside my clothes (IE no jacket) so it was obvious to steer clear of me. That's when I discovered the shivering issue and that was no fun. So if you DO go outside walking, just be sure you don't under-dress!
Good luck and heal-up!