Help! Extreme hip / groin pain

[mummysheepy]

Hoping I can get some handy hints here instead of Dr Google.
For the past 10 days I've been struggling with extreme groin pain meaning I'm barely able to walk, sleep or do any basic chores. If I stand it seems to go away but the pain shoots if I rotate my leg. I've got a physio appointment tomorrow but I wondered if anyone else had experienced similar and could give me some pointers to reduce the pain as regular pain relief isn't touching it. It honestly feels more like the bone than a muscle problem. No recollection of causing myself any injury.
Thank you.