My last 2 children have both been tongue tied. My DS2 was worse than my DD2 but both hurt me when breast feeding. Both were snipped as it isn't just the speech but dental hygiene can become an issue when they're older.

The snip is done so quickly that there is little to no pain for them. Both of my children cried more about having their head held than the actual snip itself as when we let go of their heads, they stopped crying and latched on perfectly.