Talk to Gynecologist on Gynaecologist

Asking for Self, Female, 29 years old, Islamabad I’ m 29 yrs old married one kid 3yrs old , now i want to conceive so I want to ask every month my periods started at first two days i have brown discharge then normal bleeding starts so my question is should i consider those two days as periods , my previous month date was 26 may first two days brown discharge Then 28 may normal bleeding so at what date should i considered miss period thanks need dr guidance