Hi, this afternoon I slipped by a creek and fell on my back.  I didnt feel any pain then, other than embarrassment.  However, later on and through now, my lower back hurts and it feels like a lump just to the left of my spine.  It doesnt hurt by itself, but if I rub it, or put pressure on it, it hurts a lot.  So Im wondering if you have any tips on what I might have done.  Im 25, if that helps.  Thanks!
Hello and Welcome to Chat Doctor, Thanks for writing to us. From description, it seems to be soft tissue injury. Lump might be due to hematoma formation(collection of blood). You need an x-ray to rule out any bony injury. I suggest you to consult an orthopaedician nearby for a detailed examination. You may get the X-ray of the area affected under his/her guidance.Meanwhile, apply ice to affected area and take anti-inflammatory Chat Doctor.  Avoid forward bending and rest well. Hope this helps you. Wishing you good health... Regards.