Hello, thanks for the query to H.C.M.C.
You fall from the chair ,for that we feel sorry.
You fall on the left side just 2 feet above from ground that too in risky manners and got injury.
Usually this type of injuries are blunt and hurt only muscles and blunt injury
to underneath bones, same things happens to you.
Since injuries are not serious so unnecessary tests are not advised.
Simple treatment is to take complete rest for 5-6 days and use some analgesic
gel for local use at the site of injury where there are not bruise
If some bruise or wound is there use povidon type ointment.
If pain is unbearable than have 2-3 tabs of pain killer and that's all.
Good luck. Dr. HET