I just fell from tree trimming. About 5-6 feet. Thought I just had a few scrapes. Dont feel any pain. But after sitting down for a bit I noticed a large lump on my forearm. I am not in any pain. Put ice on it. Going down. Is there any reason I need to get it checked out?
Respected user, thanks for using Chat Doctor.come have evaluated your query thoroughly.* This is due to post-traumatic hematoma formation.* Continue ice application 3 - 4 times a day, with elevation of the arm till possible.  In case it is large size, I would strongly recommend consulting your PCP to get medications in form of antibiotics and anti-inflammatory agents which will -- prevent secondary infection -- help early resolution of current lump -- take care of pain component Hope this clears your query. Always feel welcome to ask further questions. Wishing fine recovery from the same. Regards.