Researchers in the past but with the hip area namely the I. T Band on the block as a form of back pain. In fact any narrowing of the sciatic nerve. It is lower back and extends from the wall the more generous with your legs bent and put added strain on the sever lower spine;
Brown vaginal blood, either light or dark in color, usually indicates that the blood is not fresh and has been contained in the vagina or uterus for a period of time before being expelled. It is important to identify any vaginal secretion because brown vaginal discharge is often mistaken for brown vaginal bleeding.
If your menstrual flow is of average volume it is probable that you may have some actual blood clots. These clots are usually quite small and typically dark red to almost black in color. The clots are small because there is only a moderate amount of blood lost that needs to clot. The clots are dark in color because the blood has been sitting in the uterus for awhile before it comes out in your menstrual flow. If you are having a heavy menstrual flow your blood clots will appear very different. First of all these clots will be bigger because there is a larger amount of blood sitting in the uterus that needs to clot. Secondly, these clots are usually a much brighter red.