Suggest Treatment For Fractured Rib At Costochondral Junction

Dr. Dinesh Goyal, I fractured my left anterior fifth rib, near the costochondral junction (nondisplaced, nonangulated). This was followed by atelectasis due to splinting. My chest x-ray shows mild blunting of the left pleural angles and appears to represent a small pleural effusion. I am 51 years old and in otherwise good health. How serious is this condition and what is the best treatment to pursue? Thank you