Hi, I have pain in my coccyx/lower lumbar spine, that s has only started today but is really painful walking and even more painful walking upstairs, I haven t done anything I can think of to cause injury, I often have bouts of sciatica, I m 22 years old and wondering if the two could be linked and also what do you suggest I do in the meantime to help the pain, ive been taking codeine phosphate and it isn t helping.