I suppose by physical sports you thought of contact sports like rugby where someone is going to flatten you. Can't think what the doctor was thinking about. Please stop playing tennis!! At least for a while. It's too much for the shoulder area at present. Get a good assessment first and I hope a / the "top consultant" will be prepared to take some time explaining. As you are 16 I hope some sensible adult is involved somewhere regarding your outpatients appointments. Either parent, or do you have some involved sport trainer? There are physios who are good generalists but there are also specialists in sports injuries, orthopädics etc. I don't know where you are or which place you've been to and I am no longer UK based.
Can someone UK based help out some more? Physiobob?
As you are young I would hope for a good recovery, will maybe take some time to get it sorted out. Good luck