Are you able to get a second opinion? The surgeon that snipped my kids told me that if there is any damage to the mothers nipples then they will snip the tie as breast feeding is important. My DD2's tie wasn't too bad - 2 Dr's and 4 midwives couldn't see it - but it was snipped because she was damaging my nipples.
Agreed - DS2's paed told me the day he was born that if breastfeeding was "abominable" we should have it done. Well, it was "abominable" - for me! DS2 found a way to feed effectively and he got a good feed each time. It was just me that suffered! So yes, I'd go get another opinion. It is no good at all if it is affecting you.