Ovulation confusion

DEenna
So according to glow my cycle is 37 days but this is due to me having a miscarriage in June when I put my af in I happened to remember a few months previous af I also am on another site <a href="https://play.google.com/store/apps/details?id=com.glow.android">ovulation calculator</a> which says my cycle is 32 days bc that's what I entered they said I was ovulating 10-15 and glow says 12-18 also glow says my af is supposed to come Oct 1 and the other one says Sept 30 I'm not sure when to test as I'm very impatient and dont want to wait for my af to come or not any opinions would be appreciated