Suggest Treatments For Bacterial Vaginosis

my girlfiend is 37 and has been on the pill for about 19 years. she has developed bacterial vaginosis a few months ago and after buying gels off of the internet and getting lots of antibiotics from the doctor she was refered to a specialist who said she has erosion of the neck of the womb. the only advice we have been given is she's not to use tampons for 2 months and don't put 'foreign bodies' in there. now are the two things linked? and is this the best advice that can be given? obviously this is effecting our sex life now as she is worried it can be smelt all the time and she feels understandably unsexy, although there is no discomfort. please help