Languagelearner, I had an "appointment" with my GP a week or so ago. I've been suffering from painful hands.
Our surgery is operating a triage system, whereby one telephones in to intimate a requirement. The receptionist asks roughly what the issue is (you can decline to say, if you wish), the a GP or Advanced Nurse Practitioner calls you back. In my case, the call was less than 30 minutes later.
I had a good chat with the GP (I had never met this person before), and agreed a course of action, which was that I should have some bloods, then a further chat.
I commented during the discussion that I felt it a bit frustrating that she couldn't see my hands, or examine them, and she was at pains to reassure me that if she thought it necessary, she could ask for photos to be emailed in, or for the call to convert to a videa call, so that she would be able to see them.
So, it could be that you are able to have at least an initial discussion, without actually attending the surgery. That might help you a bit? I understand many practises are operating in this or similar ways at the moment.
Good luck with it all. Please don't put off seeing a medic about your leg. It could be nothing at all, or it could be serious. Better safe than sorry.