Help...😭

Sense 9am yesterday my child took 1 nap. Then went to bed around 10 and woke up at 2:15am.

Okay every time I feed him it’s like his body instantly rejects his formula. He will poop a ton or throw up everything he’s ate then cry for more. We were on gentlease and he did the same except minus the pooping. Now we are on prosobee and he poops up to 9 times a day (every feeding plus some) he cries all day. He also has a rash anywhere his milk touches him. I need help I don’t know what to do or how to fix this. I have a drs appointment tomorrow hopefully.

Could he have a milk/soy intolerance ? What do I do 😭😭