Negative?

Mariah • I am 23 years old, I have been with my boyfriend for four years. We have one wonderful son together he will be three on Febuary . We are just trying to expand and maybe get a little girl in the mix
So i have taken a few test and they have all came out negative. With that being said, ive been getting headachs, back achs, my boobs are larger then normal and very itchy. Im still 9 days away from aunt flow but is it too early to take a test?