​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​I'm 13 dpo. Glow says AF due today and my iPeriod app says AF due tomorrow. Not sure if this is implantation bleeding or evil AF 😔