It's a very individual decision. I waited 6 months. I got pregnant with my twins after that. :-) They are six now!
@mommytocleo, the doctors would probably recommend that you wait a year
We waited 6 months. My babyboy was stillborn at 34 weeks so after any vaginal delivery the doctors ask that you try to wait a year to fully heal @mommytocleo I accidentally got pregnant when my IUD failed, otherwise I would have waited the full year
I should add, my loss was very early, so I think it depends on all factors. What stage you were in your pregnancy when you lost your baby and how that factors in your health(consult your doc) , your individual emotions post-loss etc...