I am a 24 year old healthy female. I fell in the shower two days ago and a lump and bruise started to form on my left butt cheek. The pain was bearable yesterday so I did my usual cardio workout (jumping, etc.) and then this morning the lump is larger, the bruise is much more defined and larger than I expected, and I cannot sit on my left side. It also hurts when I walk, and putting any pressure on it brings instant tears to my eyes. Should I go to the ER or wait until the first available with my primary doctor on Friday? Tylenol and Motrin have not alleviated the pain at all so far.