it looks like the breastflow Bottles are not BPA free, sorry.
Does the bottle you are using now have a wide neck (like Avent, Born Free) or standard size neck (old school Gerber, medela)
maybe just switching to a wider neck like the Avent, I really don't mind shipping you some of the Avent stuff to try out and see.
i really hope things are going better mama, and i want you to be confident and proud!!!