Glad you're OK.

If I'm doing anything other than going straight, I signal when (and if) I see the other light turning yellow then again when my light turns green. I'll continue to signal if conditions allow (especially if I have to stop for oncoming traffic in the intersection).

That, and if I have cars behind me I"ll watch my mirror to make sure no one looks like they're going to make an unsafe pass. If necessary, I'll abort my turn.