I think I have thrush in my mouth

My mouth and my lips have been hurting so bad. I looked at them and on the inside of my lips and cheeks it looks like thrush, I’m pretty sure that’s what it is. I’ll go to the doctor but for now what are some at home remedies I could do? Especially for pain. The whole inside of my mouth hurts excluding my throat.

And before anyone asks how an adult can get thrush in their mouth, I think my medication may have caused it so that’ll be brought up to my doctor too.