There are two different issues - they are not related.
1- The tail-bone (Coccyx
) or its junction with sacrum
(lower spine above that) are sometimes subject to inflammation and pain. If the pain relievers are not helpful, a good orthopaedic doctor is the one to you must see - they have other alternatives like local infiltration and so on.
2- Rectal bleeding
should be seen by a surgeon - Haemorrhoids (piles) and fissure are the common causes - occasionally polyps and many others. It has to be seen/ examined by a qualified person, to confirm what it is / and rule out nothing otherwise.