A few days ago, I pulled my lower back quite badly. Since then it seems to be healing with rest, ice and gentle exercise. However, a simultaneous problem has occurred that is causing a great deal of pain. I noticed that my bottom was also very painful, and when I looked there was a red and painful lump at the entrance to my anus. I took this to be a haemorrhoid. However, it is a very swollen and red perineum that is actually causing the pain. Is this related? Are they related to my back? And how can I treat it? At the moment, the combination of injuries means I can barely sit or sleep.