Pierced nipples??

So I’m thinking about getting my nipples pierced. I’m 18, and I haven’t gotten any tattoos or anything pierced except for my ears (firsts and seconds). I wear an A-cup and my nipples can be slightly inverted sometimes, which looks rather weird, and I’ve heard that piercings can help with that. I have a few questions for ladies with pierced nips:

1. How painful was it to get them?

2. Will it affect breastfeeding in the future? I have no immediate plans to be a mom but in a good 10 years would I be able to breastfeed normally?

3. Will I lose any sensitivity? I love some good nipple play and I wouldn’t want to be numb (obviously there’s a healing period where it wouldn’t be comfortable, but after it heals)