Help with a c-section problem

Has anyone had a problem with their scar?? I have 2 children my first i had normally the second was through a c-section because i have placenta previa and couldn't have him normally. It's been 7 1/2 weeks since ive had him and my scar is playing up, it hurts when i walk to long or sleep on it, it hurts when i sit down for too long and its only on my left side in my mid section. Ive stopped bleeding and everything has kinda gone back to the way it was, not as quick as with my first though i still have a tummy bump. My scar has healed and isn't so red but above it seems to be still swollen!! I look like i have a second tummy because my waist is so tiny and my tummy isn't that flat yet, I've never had this before and i know i can't expect to go straight back to normal after 2 kids but dose this go away?? Im fairly skinny, I weigh 50 kilos and only got to 56 kilos during my pregnancy. It's just making me a little insecure and i keep pushing "fun time" back with my partner and wont shower or change infront of him unless its covered because I dont feel as beautiful as i once was after my daughter, you can even see the palvic bump through my underwear and tights, i can't even wear jeans or trackies because it makes the bump bugger. I know im still skinny and should be happy about that but i just don't think this is normal.