Wearing a bra will definitely help but make sure it's a comfy one! :) also I got stretch marks on my boobs before I even knew they could grow that fast so if your planning on using stretch mark cream (or cocoa butter) then I would do it now before they appear :(
Man I wasn't expecting them to be this tender so early. Haha thank you so much! and bras have always been uncomfortable to me.. should I Start wearing one?
Yes very normal. Your breasts are preparing themselves for breastfeeding. This feeling will come and go. Feels like it lasts forever but it does go away but only to return again later on.