HELLO  I AM 40 5-10 AND 265LBS.  I LIFTED A HEAVY WINDOW UNIT AIR CONDIONER BY MYSELF.  THEN 2 DAYS LATER AFTER I WOKE UP FROM A NAP ON MY COUCH I START FEELING A PAIN ON MY RIGHT SIDE OF MY LOWER CHEST ABOVE MY ABDOMEN AROUND MY RIB CAGE AREA. WHEN I MOVE A CERTAIN WAY OR WHEN I TAKE A DEEP BREATH AND IT HURTS WHEN I SLEEP ON MY SIDES.  COULD I HAVE HURT IT AND DIDNT FEEL PAIN FOR A COUPLE OF DAYS
Thanks for your question on Chat Doctor. I can understand your concern. Yes, possibility of musculoskeletal pain is more in your case due to heavyweight lifting. So better to follow these steps for symptomatic relief. 1. Avoid heavyweight lifting and strenuous exercise. 2. Avoid movements causing pain. 3.  Avoid bad postures in sleep. 4. Sit with proper support. 5. Apply warm water pad on affected areas. 6. Take painkiller and muscle relaxant Chat Doctor.  Don't worry, you will be alright with all these in 5 - 7 days. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.