3 month rash

Faith

My 3 month old started getting tiny bumps on his abdomen and chest area around 2 months of age and now he has rash spots on his thighs and abdomen. After every bath I dry him, lotion him and or oil him up with the pipette products and not sure what it is or how to treat it. We were going to bring it up to his pediatrician but they cancelled our appointment and rescheduled to January.