Hello Good Morning. I Am Sandy. My 1st Day Of

Hello good morning. I am sandy. My 1st day of last period was on 3rd August. We are trying for kids. During our last attempt we were unsuccessful. This month I started taking harmone balancing tablets and injection. We tried continuously 8days during my ovulation. My next period is due on 3rd of September. My question is that can I test for pregnancy before my missed period? Please help.