When does everyone ovulate?

When does everyone ovulate? I got off my period Friday was my last day, and I started testing as my period got lighter, started showing faint lines Wedneaday, same faint line Thursday and Friday and then Saturday it was quite a bit darker but not a positive. Then the next day was extremely light again, and now today nothing at all. According to glow this week I'm supposed to ovulate, particularly Friday, but considering nothing is showing up two days before this supposed ovulation, I don't think I'm going to and it's making me wonder if I'm going to miss ovulation.