I have a Baker's cyst behind my left knee. Dunno how I got it - being old and fat probably had something to do with it. It's been sore to a greater or lesser extent for about 4 weeks now but today, for some reason, the pain is excruciating. I cannot walk, sit, lie with any degree of comfort. Ibuprofen isn't touching it. I have elevated it, compressed it with a crepe bandage, iced it front and back. I was at work but left as I couldn't move and I am at home crying in pain and wondering what to do. Do I woman up, do I phone the doc, do I go to A&E (hard cos it's 30 miles away and it's my clutch knee so I can't drive)? Can anyone help or make useful suggestions, please?