Side feeding

So I know one of the positions is laying in your side with baby for feeding. We love to do it at nighttime in bed. My question is if my baby is feeding on his side then that should be fine? I know you are not suppose to feed them on there back cause of there ear canals.. Can anyone shed some light on this matter? Also he got circumcised today... :( not sure if the laying on the side will work right now but we plan to do it again soon.