BV (bacteria vaginosis)

K
I was treated at week 11 for BV. I didn't even no I had it (no symptoms). I found out after a Pap smear durring my second prenatal appointment. I'm worried it could come back & I wouldn't even know since I didn't have symptoms last time. I'm now 15 weeks 1 day. Will my doctor test me again? What triggers it to come back? 
Anyone know or had it before? Did it come back for you?