This treatment is being suggested on bases of the information provided. However I would like to examine & investigate you  in detail. -Control  Hypertension, Diabetes or  metabolic disorder, if there is any. -Any way it may be tried, --. Dolokind Plus (Mankind) [Aceclofenac100 mg +Paracetamol 350 mg] 1 tab. OD & SOS. X 5 days. --. Caldikind plus  (Mankind) 1 tab OD x 10 days. -(You may need help of your local doctor to get these medicines.) --. Fomentation with warm water. Let the part not be exposed to cold. --. Sleep on a hard bed with soft bedding. --. Use no pillow under the head. --. Avoid painful acts & activities. -- .Do  exercises for the affected part- (perineal exercises). --.(Take help of physiotherapist or you can visit my you tube channel Dr NC Gupta Yoga Simplified). YouTube link: https://www.youtube.com/watch?v=tY8RpRrv05g&t=9s, https://www.youtube.com/watch?v=fAYhFcmo0Mw&t=52s --Do not ignore, let it not become beginning of a major problem. --Do ask for a detailed treatment plan. Kindly make sure, there is no allergy to any of 6 medicines. --For emergency treatment visit nearest hospital. --Wish you a quick recovery & good health. --I hope, I have solved your problem to your satisfaction.  Dr N C Gupta MS (ortho)

Looking at the history given by you and assuming that you are unable to seek medical care due to corona virus lock down I am giving my opinion. I appears to be injury to coccyx or tail bone. Avoid sitting on hard surface like plastic chair, floor etc. Use a coccyx pillow while sitting. If you don't have any history of diabetes , hypertension, renal disease or allergies and if pain is unbearable then you can try Tab voveran d 50 mg twice a day for a couple of days, but you should do an X-ray.

According to your history your tail bone also called as coccyx got injured wether it is displaced or not we shld rule out with xray

You are suffering from coccydynia .Avoid prolonged sitting ,use coccyx pillow /doughboy ring cushion .... Hot fomentation for that area and ultrasonic physiotherapy .....antiinflammatory medications will help ....kegels excercises and general conditioning excercises like walking help

Its injury to coccygeal bone ...try to get xray  sitting and sleeping  lateral view of sacrococcygeal bone ...everytime use cushion while sitting..use Tab Enzictra ds twice daily..

It will take six weeks to heal. Don’t sit on hard surface. Use doughnut pillow. Consult orthopaedic dr.