so im 22 weeks pregnant and every couple weeks I'll get pimple/blister like bumps on the outside of my v-jay-jay. they're small and only 3 or 4 of them. I've gotten tested for hpv and everything was negative. but I was diagnosed with bacterial vaginosis and they said i don't need to take medication for it and it will clear up on it's own and I don't think blisters are a symptom of that. so what else could it be?