Af didn't show up yesterday, bfn.

My periods ever since the misscarriage in November haven't been as regular. Last months af and this months have both been late, last month I had it by second day missed but this month im already two days late. I couldn't help myself this morning and took a test only to get a bfn, although it was a blue dye test and I hate those. Anyone in the same boat as me? Having issues with regulating your cycle after mc?