J.P.
Acid reflux can be stopped. I have a LOT of experience in this department.
Most babies are overfed (like a 3-4 oz bottle this early on) OR the BFing mom is eating something that upsets the baby's stomach. A baby's stomach at birth is the size of a marble. 3 days later, the size of a shooter marble and by day 10 its the size of a ping pong ball. If you put a gallon of water in a 1/2 gallon bucket, where is the excess going to go??? It's NOT a Zantac deficiency.
Thrush is yeast and I find that PB8 stops it. You can take it orally and probably should if you diet consists of ANY dairy, sugar or breads. I have given it to my babies and they got instant relief. I opened the capsule and dumped a little into their mouths before I latched them on. It's dry, so the baby can gag a little....or just mix a little breastmilk or water with it to make a paste and then latch him on. Also, if you had a c-section or any antibiotics, including for GBS, then you will definitely want to consider taking PB8.
Foods that are most commonly upset the baby's stomach are as follows:
Dairy
Corn (including corn syrup)
Tomatoes (including ketchup)
Wheat
Cabbage
Broccoli and Caulifower
Sugar and breads - to those with a yeast issue
Changing the foods, giving/taking PB8 (other probiotics didn't seem to work as well) and Chiropractic helped the baby tremendously.