What could this be?

I was having very watery discharge and went to midwife, she stabbed me and it came back as bacteria vaginitis, I’ve been tested for all Sti’s and I am clear. I’ve had treatment for bv which was oral antibiotics. I’ve tried to get an appointment but can’t until Monday. Has anyone experienced this kind of discharge before? If so how did you treat it? Current 35 weeks pregnant and worried about baby.

Symptoms

Itchy

Slight smell (not fishy)

Excessive discharge

Tia x