It might be helpfull having a walking stick or wheelchair if walking/ moving around is causing a lot of pain for you

Is there a reason to not to? I thought I did but once I started using mine life was so much easier.

I have a friend who has a mastiff for a service dog who she has trained to lean against her to help her get around. That's because she has a bad leg though. Having a dog's assistance can be better than a cane depending on your needs. It can also be subtle, for example that the dog just likes or prefers being at your side. Great danes are great natural leaners, too. You can teach subtle commands to them as well. The dog could also be trained to tell you (subtly) about changes in your heartrate and blood pressure for example. I'm sorry that getting around has been painful for you! Hopefully you can find something so people in your life won't cause you any more stress than you already have.