Thanks for your query.
The whitish mas of tissue could be vaginal skin tags
, which are quite common.
They could also be warts
, you should have them checked.
On the other hand it could be a flake of yeast infection also.
You should have a gynecological evaluation.
the yeast infection sounds most likely, as you have had vaginal soreness too.
it could well be the precipitated bath salts that you put in!
All the best.