BFN, No sign of AF


AF was due on Wednesday and it’s Sunday today.

I’ve had typical period pains since Friday with v small spotting, dark black. But no sign of AF at all.

It’s so strange I feel like I have AF with the cramps but nothing.

I tested on Friday and this morning but two BFN.

I’m worried something is wrong but I’ve don’t know what.

Anyone any ideas??