My 3 year old complaints of her mouth that is sore, when i looked i saw its very red and white patches at her soft palate do i need to take her to the gp?

Dentist: Start with a pedodontic dentist for an evaluation. Diagnosis is key here.

Stomatitis: You describe this as being on her soft palate, not on her gums. I doubt a dentist will be very helpful if not involving her gums, and then may only be minimally helpful. Your pediatrician should look at these sores, perhaps do a strep test. Then will discuss possible treatment/symptom relief. Most of the time these are viral in nature and will just run their course and clear up.

Thrush?: You are a Caring Mother. “very red and white patches at her soft palate” are likely due to fungus infection. However, bacterial or virus infection needs to be checked. Please take your child to Pediatrician for Diagnosis and Treatment. Your Child’s Health is Precious!