So my prev period was during 3-11 june, It came about 2-3 days earlier than expected and everything was usual except this time before i had my period i had backaches. I've Never had backaches before my period, only during. 12 days later , on 23june i had period again ! Only this time the color is dark brown to black and it smells very horrible. Its 27th june noe and its getting heavier. It was just little patches on the 23rd but now its like normal flow. I also got backaches prior to this, from the 20th june till it happened. Is this normal?