MSacorn is right...
make sure you bring an Ace bandage with you, or an ankle-support Ace one-piecer-dealie-bopper, maybe? and ice.
and the bruise? well, that happens with DEEP tissue damage, where it takes a while, sometimes DAYS, for the bruising to surface, and become visible.
lol, Yabbit, I'm a freakin' EXPERT on ankle-collapse-disprder...
I have a pair of Ankle Foot Orthotics (called bilateral AFOs), not those big ol' fancy ones that are knee-high, and custom-fitted and all, instead, mine are soft fabric, with wide Velco-straps, with STIFF plastic side strips that keep my ankles from doin' that rock 'n' ROLL carp...
I have found that if I wear "dress socks" (knee-high, very thin, almost like nylons), I can still wear my USUAL tennis shows, and hiking boots, even with my AFOs on !!
I got mine with an Rx from my neuro, at my local
HANGER outlet in California.
http://www.hanger.com/ProstheticsOrt...sSupports.aspx
now, if I just took the TIME to strap them on all the time, even when I feel GOOD, but have some walking to do, then maybe I wouldn't keep SPRAINING my darn ankles ??
three times this year already, darn it !! and ARGGGGHHHH, into the bargain...

in solidarity.