I have general muscle pain in hip groins and thoracic back areas for nearly three years. Ibuprofen and paracetamol do not work. Two steroid injections have not worked at all. Pain is worse if I stay immobile for more than twenty minutes. Sitting at desk or standing still for similar time also brings on more pain. What is wrong with me? I have proved negative for rheumatism. I am female and 29 years old and size 4 so not overweight at all.