Symptoms and Csections after your first

The other day I posted about not having symptoms anymore.. I'm 5 weeks an two days.. & Gahhh my boobs are so tender again and way bigger! I'm like a 34B but now you can tell one boob is bigger than the other 😩😂 laugh at me if you want haha 
Csections: I had one with my first. I would assume I will end up with another one. I'm 5'1" 112 pounds with a small build.. How did pregnancy affect your scar throughout? And was the healing process more difficult the second time around?