Replying to Is my toe/foot broken?

So I went fishing and was walking in the creek in flipflops when my foot kind of slipped weird. It felt like my toes twisted and hurt kind of bad. I usually never bruise and it hurts to walk on still 3 days later so I think I might have done something bad to it.

My sister, who is a nurse, thinks the end of the foot might be broken because of how wide the bruise is spread.
Any ideas? I really don't want to have to go to the doctor if I don't need to