My husband slipped and fell heavily on his buttocks about four weeks ago. A muscle just below the belt line on the upper part of the right buttock cheek is swollen (tennis ball size). He is experiencing periodic sharp pain from this region down the back of his left after sitting down or leaning forward. This frequency of these episodes is increasing.
hi you can use hot water pack to relief pain and use hot and cold therapy together for 10 minute and this will relief pain and swelling too and do light stretching  use declofanic gel and then cover the part  this will help you and after using hot pack perform it twice or thrice and specially before sleeping and in morning follow it it will help you lot wish you good health