This current issue appears to be more suited to a GP visit, so get yourself booked in at the practice. She wasn’t dismissing you as a timewaster, but she needed time to do a proper examination and decide what to do next, whether to refer you on and who to etc.
I also have some foot and leg numbness issues following 4 slipped discs 10 years ago, so I have a lot of sympathy with what you’re doing through.