I didn't. But my motto during my pregnancies have always been "if you have to ask - you probably shouldn't..."
Besides, you only have 7 more months to go. But any consequences the baby could suffer as a result would be for a lifetime. So I vote "no". I just wouldn't want to roll the dice on something like that.
But at a bare minimum, you should at least ask your obstetrician (and then keep in mind even if he/she says "yes", it's probably because they're assuming you're using it as directed on the bottle - not the way we LHCFers are using it).
Just a thought...