This brings back a memory Grandyma, like your husband I woke one day with agonising pain in my right knee, I couldn’t walk and Mr C carted me off to the doctors post haste. This was 10 years ago when things were different so I was seen slmkdt right away. A lovely young doctor, newly qualified, took time and had the patience to thoroughly examine my poor knee while I literally sobbed. After consulting his computer and humming a few times he finally told me I had a Bakers Cyst, to go home, take paracetamol, use ice on it and rest for a few days and it would ease and in the meantime go to the hospital for x rays.
After two days there wasn’t much improvement so I went to the local hospital A and E where an x ray showed my knee cap had done something or other, it might have been slipped and I needed immediate surgery. Two days later I was in theatre and given a brand new knee, so much for Bakers Cyst.
I didn’t make a fuss, just made sure I didn’t see that doctor ever again, luckily there was another in the practice, but many times if my knee ached family member would ask if my Bakers Cyst was playing up, no but my arthritis is.