How do I know if a bone is broken?

I think I might have broken a bone in one of my toes. Woke myself up from a nightmare by kicking my stupid French wooden bedframe at full force >_> I’ve never broken a bone before, but it is an intense radiating pain when I move it or put any pressure on it.

How do I know if it’s broken as opposed to bruised, and what can I do? I am broke as a joke and rationing my food, so I can’t even go get some subsidized healthcare, and I’m returning home to the US in under two weeks.