antheia what is your m/ws (i dont wan tto say policy but ykwim) stand on internals? like bluedaisy said there is no risk of infection if the area stays sterile.
so save the bath until you in labour, no internals until your in labour.
remember vaginas are self lubricating there is no actual Dry birth either.
so if you keep things out of there no infection will get in there!
also this time your less likely to be clock watching(homebirth is great for that)
just go with the flow!