I feel like my boobs are a red target!

So my husband and 15 month old are always bumping, touching, knocking into my chest. And for me like my boobs arent even big they are just super tender especially my nipples. I can't even be braless under my clothes at home. Tonight I was putting my girl to sleep and she reached up and scratched and pulled at my nipple. I swear I saw stars for a second. Like I gasped for air and was frozen trying to keep my cool.

I'm so worried on how breastfeeding will go when I have baby #2.