Bacterial infection, PID, and infertility?

A few months ago I was diagnosed with a bacterial infection I think it was bacterial vaginosis, anyway they said it wasn't a STD. I think I had it for a long time before that... and I think it either never fully went a way or came back... and I read that it can lead to PID, which can cause infertility. I also read that that can happen after surgery such as a hysterectomy or abortion... but if I don't have surgery am I still at risk for PID? and if i am still at risk what are the chances that PID will lead to infertility? and if someone had damage from PID would invetro-fertilization allow the them to still have children?