To start with you should not feel guilty, you have nothing to feel guilty about. You really shouldnt worry too much what other people are thinking either. You have worked hard, got well qualified, it's not your fault that injury is preventing you from working. Don't worry about other people, worry about yourself. My mother had a similar injury in her knee and i remember how badly it affected her mobility and how ineffective the treatment was.

Don't let others get you down. Maybe have a chat with your husband and expalin how much this is not just affecting your physical health but also your MH. Maybe try and get him to be more supportive. That's his job at a time like this and he probably just needs a little reminder.