Help!!

Daeja

So i bled maybe twice so far once this week and once last week only literally a couple dots like on my tissue and i start my menstrual usually around the first ,last month it was the 28th my ovulation day this month was the 13th i was tryna the whole week before that and the week of it is now the 21st and i had eggwhite cervical mucus and been having light cramps yesterday does this mean anything when should i test ?