Trying to figure out my ovulation this month! It’s driving me crazy 🤣 I’m on CD 12, glow predicts I will ovulate Tuesday (CD 14). I had darker lines around CD 9/CD 10 but they definitely were not 100% positive. I’ve tested twice today and both were lighter than before - definitely negative. Anyone else experiencing? Is it possible to get an earlier surge and then get a positive days later? Or was that my ovulation. Also on antibiotics this past week, could that affect?