I went to a concert when I was like 8mo. Pregnant with my first...she seem to like it by the increase in kicks and movement I had while I was there...no hearing problems at all. Go enjoy yourself!
I used to play in bands with my first pregnancy and yes, it does startle baby a bit at first, but they quickly get used to the sounds. I strongly believe that that's the reason why my son was such a mellow baby and is very adaptable now. He never got over stimulated like some babies do, and could sleep through anything and still does today. I'm hoping #2 will be the same, however I don't play in bands anymore and I'm not exposing him to the amount of noise like I did with #1. oh, and baby #1s hearing is just fine. :)
The noise may startle the baby tho.
Iv been to several metal shows and she sleeps through them. Lol. I don't think it will cause any damage.
I went to blues fest and sawdrop kick Murphys. My little girl is two today and no hearing problems