How to get rid of a toothpaste burn?

2 days ago i out colgate oxygen on my acne to try and get rid of my my spots and pimples, yesterday when i woke up my face where i had put the toothpaste was really rough and bumby, then today it feels like a chemical burn and its really sore around my nose. So i read a few articles on how to reduce the pain and one person said dab milk on the sore areas but another said use sudocrem because that is designed to help burns but i dont know which is better please can someone help me im in pain