Hi, may I know what happened to my 2 months old.

Its prolly a diaper rash.. if it doesnt get better within a week, try changing diaper brand. some babies changes in allergic reactions to diapers at different age.. when my 5yo was a baby she couldnt wear drypers but when she turned 2, she can suddenly wear drypers. buy for my 2yo, she can wear drypers at 1st, but she turned 3-4 months she couldn't wear anymore. all of this despite changing diapers immediately after pee/poop.