Painless vaginal bleeding

Hi there. I’ve been experiencing painless vagina bleeding (not my period) for a week and a half now. It is heavy to saturate a tampon, so not spotting. Went to the doctor Friday, he treated me with vaginal silver nitrate for the bleeding and gave me some antibiotics and said it was BV (though I had no smell or abnormal discharge) Now, four days later, I am still heavily bleeding and he wants to do an ultrasound for polyps and fibroids. Has anyone experienced this?

I am a 22 y/o, never been pregnant, and on the pill.