When should start ttc?

Amber • 💝

Ok.. so according to this <a href="https://play.google.com/store/apps/details?id=com.glow.android">Glow app</a> I’m supposed to ovulate this week.. it was right on the money last month.. today is Tuesday and the ovulation day is Supposed to be Friday. I took a OPK test this am there is very, very faint line next to the control line.. When should I ttc? I read the first few days before ovulating and day of, are the best times to ttc... I’m so confused.. should I start trying now or wait til the line is darker?🤦🏼‍♀️🤷🏼‍♀️