First of all - there is no such thing as a pathetic post. Not on here.
A lot of us are dealing with very serious, debilitating and painful symptoms. Being overwhelmed with that from time to time is not pathetic. It is absolutely human, normal, happens to us all at times, reasonable, sane, etc!
Clawing our way back out of there is hard, but doable. You've done it before - you'll do it again.
The "Have you hurt your knee? / What happened to you? / Twisted your ankle? / etc" brigade really don't matter. A lot of them are just nosy. Some are genuinely concerned. Some are just making conversation. Don't let them put you off getting out and doing things. Maybe practice a few replies - "Yes" is a good one to shut them up! I have a friend who makes up crazy answers, e.g. I tore all the ligaments in my right leg competing at the World Karate Championships, I broke my back jumping on a bouncy castle, I can't tell you - I signed a confidentiality agreement, etc! If you have the time and energy, you can always just be honest - this is usually the thing I plump for - any chance to educate! Ultimately, you can just ignore them though. I guess we all deal with it in or own way. If you can find the "first to dance" bit of you again (it's still in there you know), I bet you could have a bit of fun with them (maybe twirling a bright pink stick at the same time?!) :-)
I really hope that operation gets sorted out very soon and that it makes a massive difference. You seem to have been waiting an awfully long time :-(
Hang in there! A better time could come along any day...
PS I bother because I know what it feels like, and that even a small gesture can help. More (((((HUGS))))) xxx