OMG, that bruise! Wow, I hope it doesn't hurt too much. The only fall ins we've had so far is one spring we had just opened in May and the water was 50 degrees. Hubby went to grab something he saw floating on the water and promptly fell in the deep end so had to pull himself out. His glasses had fallen off and because they were rimless, it took him a long time to finally see them and he was able to get them out with a leaf rake.
I wear flip flops and usually a long caftan so not the best thing to wear when skimming and leaf raking. I guess I've been lucky so far, although one year I had a broken foot which was healing when I tripped over the solar cover reel and reinjured it.
I really hope you feel better. I haven't read through all the posts but that gel is called Arnica gel and I heard it's good for healing bruises.