Hey guys, so I got into lifting 5 months ago, lost a lot of fat and gained some muscle and now I am around 14% body fat and focusing on increasing my muscle more and I noticed and even my friends and familiars noticed, that my bottom ribs stick out a lot from my chest. An example of this is: http://pectusexcavatumfix.com/wp-content/uploads/2015/06/My-Flared-Ribs-Case.jpg As you can see in that image, in the left and right there are ribs sticking out, and when I lay down its even more noticeable. How can I fix this? I also have bad posture, and im working to fixing it so it but are they related? Or when I gain more muscle it will not show as much? Any tips?

EDIT: Its not Pectus, its just the flared ribs. That images was the best I could find