Chronic back pain. Me what should i do!

Five years ago I fell from bed and landed at my lower back and since then I have a back pain which goes and come back I have sore back muscles in the morning after waking up I visited a doctor in Ludhiana dm in rheumatology and other md in medicine and a other orthopedic and they diagnosed it as slipped disc and prescribed me back exercises,pain killers and vitamin D3 and saying it would take years for the slipped disc to become normal But still I am not feeling well Sometimes the pain is so severe that I can't even stand I am a housewife and sometimes I have to stand for hour and so continuously while cooking food Housecleaning is done by the servant and I don't do any hardwork besides cooking because some doctors have advised me against doing so Please tell me what should I do