To expand on this, CDC, OSHA, and NIH have a lot of guidelines and data on noise exposure to pregnant women, as well as lead exposure. Extended range trips are certainly a bad idea, and we can extrapolate that single shot exposure is similar to adults: maybe nothing bad happens, but do you really want to risk your baby's hearing for that one deer?
I've has tinnitus since I can remember. My wife and I had her sit out of hunting last year 100% for this reason. My kids won't know this ringing until they're 18 and shooting without my supervision and they're paying for their own ear doctors.