how much swelling is normal after circumcision?

Jg • Pregnant with TWINS after mc in April 2015 -looking forward to this journey - trying my best not to be anxious
Hey everyone ftm here. I had my boys circumcised yesterday - they both seem happy and eating, having wet and dirty diapers - however I noticed their penis' are quite swollen - my question is how much swelling is considered normal And how long does it typically last. I know it is normal for there to be some swelling - they had the plastibell