I am sorry that you had this injury
My suggestion would be to take very good analgesics with muscle relaxants like Hifenac MR for a few days.
You need bed rest
for 2 days. Please do not go to work, if possible tomorrow. Otherwise, please inform your HR department regarding the same.
The pain in your chest may be due to impact on the ribs which causes acute severe pain
, the pain in your bottom may be because of the impact of fall on your sacrum
Hot fomentation to the affected areas is beneficial.
Get well soon and regards,