Here are the DOs and DON'Ts from the NHS
Do
stay active and gently move your shoulder
try exercises for shoulder pain – do them for 6 to 8 weeks to stop pain returning
stand up straight with your shoulders gently back
sit with a cushion behind your lower back
rest your arm on a cushion in your lap
use pain relief so you can keep moving – try painkillers like paracetamol and ibuprofen, and heat or cold packs
Don't
completely stop using your shoulder – this can stop it getting better
do things that seem to make it worse
make up your own strenuous exercises or use heavy gym equipment
slouch when sitting – don't roll your shoulders or bring your neck forward
You can read more here:
https://www.nhs.uk/conditions/shoulder-pain/
... and meet Mr Tim Allardyce, a fab physiotherapist in Croydon.