Hard to pinpoint really but definitely very lower belly/top of pelvic bone, although it feels like it's inside the bone. Sharp, shooting pains that last only seconds but literally take my breath away and render me immobile. I really can't move. I've had these pains previously but only very sporadically and never had any kind of infection or anything so no idea what causes it. Since it is so painful when it happens, wondered if anyone here has similar or has any answers? Thanks.