Strained breast muscle

Deanna • Im a FTM to a baby girl born April 29 (after being told i could not have children) i plan to stay at home with her :) and im pro breastfeeding!
So i pulled a muscle under my left breast trying to get off my couch (its as pathetic as it sounds) unfortunantly i cannot move my left arm or take a full breath now...walking is unbareable as well as bending over...to add to it i have a deep chest cough (yay) im worried it wont be healed by the time i have to push... im 40.1