Hi there, for the past three days I m having a lot of lower abdominal cramping/pain/ bloating and in my lower back and buttocks as well. Sort of feels like period cramps or a pulled muscles but period is not due for almost two weeks. I ve been taking Advil but it is not doing much to relieve the pain. I ve been more tired than usual as well but pretty sure it s not pregnancy since my husband has had a vasectomy .