well i dont know whether you really should or not, but....i did and it doesnt seem to have hindered me since.  mine was my little toe and it was the 4th time i had broken it (i only need to touch it now and it breaks as it is so weak), i did leave it  a couple of days till a lot of the swelling had gone down and decided to give it a go and it didnt hurt too bad so i carried on. i guess it comes down to the usual of "listen to your body". if your toe says no then dont do it, if it feels ok, try it but be careful.

If it doesn't hurt when you run, then run.

If it hurts, don't run until it stops hurting.

Simples.