confused

Koya
According to glow I ovulated the 9th I had sex the 8th & 9th so currently I'm 8dpo been getting headaches & nauseous , today have mild cramping but when I wipe I'm Getting ewcm I'm confused because you get that around ovulation my period suppose to come 23rd according to glow, have any of you ladies experience ewcm early pregnancy or after implantion ??