Going by Glow, I'm supposed to start in 7 days. Even though I know it was super early, I tested today (afternoon, 2 hr urine hold) and got the faintest line on frer. Tested later tonight and bfn. Lower back is kinda aching and also having some minor cramping. Any ideas? Maybe the frer was a fluke? I have attached a pic and while it was more noticeable in person, the line was there before 10 minutes and was pink. TIA 🙂