@Odette what smells should I look out for ?
I'm not sure what you mean by balloon... but keep in mind babies can have erections! But of course, inform your doctor, and if it happens again, take a picture so your doctor can evaluate better! I am not American, I come from Europe where circumcision is not a thing at all! I frankly don't understand why is a thing here since it's proven is not medically required and it is actual better to keep them as they are. . Anyway, don't worry too much! Keep monitoring his wet diapers and talk to his pediatrician for reassurance!
Hi! You should inform his doctor his foreskin might be tight and keep an eye if it's red, smelly or swollen.