On CD 11 with expected fertile dates of 26-1. Do ovulation tests get darker over time? Took today's (22) at 6:30 and completely forgot to look at it until about 30 minutes ago (8pm). Didn't test yesterday because it was still sooo light so was shocked to see it this dark today. Or does it matter if I had sex earlier today?? Lol first month testing so I'm new to this 🙈