Hello. I Am A 27-year-old Female. I Fell Down My

Hello. I am a 27-year-old female. I fell down my stairs on August 18th (nine days ago). Immediately, a very large lump appeared on my left buttock. The area was tender and red. I applied ice and took Ibuprofen as often as allowed. The next day, there was some bruising and the pain had worsened. For a short time, it felt better and then about 3 days ago, I began to have a burning sensation in and around the lump. The burning and stinging make it feel as if my skin is being slowly and torturously pulled from my body. I cannot seem to find relief from the pain. What should I do?