I don't know what bv stands for, but I'm sorry for your losses and I hope it all works out well for you. Agree with PP that your doc is probably the only one who can help with regard to treatment/prevention of an illness/disease/condition.
Me: 25 DH: 28
Hubby's little boy - my wonderful step-son - born 5/23/10
BFP#1: 06/2010...my beautiful baby girl born 3/7/2011
BFP #2: 10/24/15...mc on 10/31/15
BFP #3: 11/27/15. EDD 8/6/16
"Success is going from failure to failure without loss of enthusiasm." -Winston Churchill
Re: Advice...
Secondly, please put a trigger warning in your title.
Third, these are all questions for your doctor.