Depending on many factors, the most common reasons for this are muscular or skeletal damage or injury around the L4-L5 vertebrae. If this is the case, the injury can be temporary, although most...
If the pain is in the lower abdominal area on the right side, it could indicate appendicitis. It could also indicate an ovarian cyst (pain on either side - not just the right). If you have fever, or...
Mid back pain is not usual any you must seek your doctor
Two things I had backaches/pain from that weren't straining or actually doing something to my back were gallstones -it hurts mostly on the...