What’s going on 🥴🥴

I have had 4 different predicted ovulation dates from my apps. Femometer said the 17th and then the 20th after I logged my LH test. Flo says the 23rd and Glow the 24th. What do you guys think? This is my first time using test strips. I got pregnant my first cycle of trying, using Flo, but I miscarried

12/1/19.