10 year ago had an anterior dislocation after fall on outstretched hand, reduced in theatre.
Have had periods of physio since due to occasional pain/ clunking.
Past few weeks clunking in and out and pain become more frequent ( have fallen twice but no obvious shoulder injury)
Today laid on sofa with arm at 90 degrees, twisted hand and shoulder slipped out 
Managed to massage shoulder and twist forearm and it clunked back in.
What do I need to do?
Immobilise?
Sling?
Keep it moving?
Get checked out?
It’s such a hideous feeling 