Someone tell me not to pee on a stick!!

Ka
Been trying for #2 for 5 mths now and really sick of trying and just wish I was knocked up already. Glow says AF is due sat but the last few months I have gotten my period 3 days before when glow says. I really want to pack up the kiddo and hit up walmart for some pee sticks even though I know it will be neg. Someone please talk some sense into me!