Sir...am Having Burning Pain On My Coccyx Region ..that Started

Sir...am having burning pain on my coccyx region ..that started 2monthz bak nd i visitsd a doctor and she told may b bcz f vitamin deficoency and i tuk tblts olzo...bt stil am not recovered from that..and i cant sit fo long tym in chair and hav difficulty while long standing also...so sir please gimme a reason fo dat..