She could be allergic to your soap, fabric softener, dryer sheets, shampoo, conditioner, fibers in your clothes, and the allergens you have on you and she could be allergic to the soap, water additives, or lotion you put on her. She could be allergic to the formula she's on. She could be allergic to just about anything but as long as she is switching around and trying new stuff you won't know anything.
There is baby acne, it's just a rash to me, and all sorts of stuff the baby can have.
Reflux isn't spitting up. Reflux is projectile vomiting and gurgling and here it comes.
90% of reflux is the parent overfeeding the baby too. There is a swallow test the docs can order that takes place in the hospital while they're being X-rayed. It's on an empty stomach so they can see what the body does when the food is introduced. If there's a spasm or stuff that happens to the body while the baby is swallowing that's how they diagnose reflux.
Our little guy too .9ml of Reglan about 10 minutes before each bottle. It basically relaxed the muscles and helped the lower part of the stomach to open easier so the coming formula would go on down into the lower digestive track quicker. Then he was less likely to have his formula come out the top. We put Mylicon gas drops in every bottle of water and when we added the powder to it we swirled it, not shaking it at all. Shaking the formula puts air in it, a lot of air.
He slept in a bouncy chair in his crib until one point when he just wouldn't go to sleep that one night. My husband took him out of the bouncy seat and put him flat in the bed. He promptly turned over on his stomach and passed out.
We kept him in our room for at least a year so we could hear him when he started gurgling and we could make sure he didn't choke on reflux formula or even food.
So hopefully you are simply overfeeding your baby and can give them more bottles with less formula in it. They'll get used to it and it won't be a life long issue that will keep you up at night or sleeping where you have to be wide awake any second and up running to grab your baby and make sure they aren't choking on puke.
Reflux isn't fun.
As for the swallow test and the rash...only the doc can treat those things and your doc might need to change if they aren't listening to you. If you switch docs and they say the same thing, then you have to decide if you are overreacting or if they are not the docs for you.