Last month I had periods for 2 days then got lower back light pain. This month I got periods on my periods date for 3 days when my periods last always from 5-6 days. I still have the lower back light pain. I took 2 urine test both negative. I have also taken blood test and waiting for the result. I think I might get a negative test but I think I am 6 week as this changes never happened to me before. Anyone with same experiencesls help. Serious answers only