what do you think?

As you can see my periods are all different lengths. Very irregular. I'm 4 days late according to glow (it says due 15th at top because I've adjusted the dates do to lateness). but I never test usually because I'm just irregular and glow could be right or could be wrong. but this is my longest cycle since that 42 day one. which was after recovering from a miscarriage. and its got me wondering should I test or just wait a little longer like usual? My original af due date was the 9th.