Bakers cysts


Hello everyone, has anyone had a bakers cyst behind their knees? I have oa, fibromyalgia and spondylitis in my lower back. Does anyone also have any good tips on exercise? Have talked to my GPS but not very helpful, have seen ra consultant who found the spondylitis which was on my ct scan from 2 years ago for chronic pains in my stomach. Sorry for the constant questions just would like some guidance as I am a pretty active person and find it difficult to be restricted.