A friend of mine ran two marathons in two days with a broken bone in his foot.

It hurt, but the doctor told him the running wouldn't make the problem worse so he went for it.
It sounds like you are well on your way! Congrats! Don't forget to practice transition though! Your gains in the water and the bike could evaporate with a bad transition. Here's a nice guide:
http://www.adriansantic.com/blog/def...tml#Transition