Most Helpful Girl
When the needle goes into your tongue it isn't painful at all, I kind of cringed because it's a weird feeling but it's not painful. You won't feel any pain for a few hours afterward when it starts to swell, but you'll mainly feel it swollen the next day. It will stay swollen for around 3 days I think. I don't think it will show too much, it only does if its a bit forward. Mine was in the middle and didn't show when I was speaking that often.
The swelling is very annoying, as you can't eat properly or talk properly for several days, make sure to have a lot of ice water throughout the day to keep the swelling down.