hi, thank you for providing the brief history of you. let s being with the pain you are having in your chest area. since you may had a direct impact on the rib bones, it will give pain for some more time . Healing will take it own time as the rib bone is thin chip of bone. also, as x-ray has confirmed no fracture or pleurisy you shouldn t worry much. you should try performing regular breathing exercises - Deep breathing, coastal breathing, diaphragmatic breathing. note - when you do breathing exercises you should place the hand over the area affected as it will give support to the area to avoid any pain. you can repeat the same for as many times you feel to do it in a day. with the grace of God I wish you a good health. regards. for any doubts you can contact me directly. Jay Indravadan Patel