DH woke up a few days ago complaining of a stiff shoulder. It gradually got worse. The most painful movement is putting his arm in the breast stroke swimming position but really with most movement & painful to press below shoulder & dull ache at rest. If anyone has any experience of this I'd be really grateful for any advice. He isn't one to complain but even putting his jacket on he's shouting Ouch! 🤷♀️