So my period has been wacky. I'm having 3-4 days of off and on very very light spotting before a more normal flow.so what would you consider cycle day 1? The first day I see spotting? Or the first day I have normal flow?

And then going off of this, since my period is so wacky and irregular, when should I start OPKs? Just suck it up and start using them right after my period as not to accidentally miss O?

Thanks ladies!