I went to lift my 4 yr old into the car this morning and quickly put him right back down, excruciating pain went thru my lower back- not sure if I've pulled something or what. Told my son he would have to climb in himself. I managed to get him to daycare and get to work but it's hurting bad, hurts to walk or straighten up much. Suggestions? My pelvic area is hurting a bit to but not sure about that as it's that time of month too. I took 2 advil but no relief yet. Thoughts - suggestions please!!!??