So I've got a question ttc#3 first time using clomid

(Rebecca) • Im 30 wife married 11 years and have 2 boys 12and 6 and 9 month old baby boy named Noah jacob!👶🍼
So im suppose to start my clomid tomarrow im super excited!! Im suppose to take it days 5-9 but af seems like its ending today and I thought your suppose to take it ur last day but it seems to be ending a day early does it matter should I still take it tomarrow?