Implantation bleeding or period?

Bailie

So I was suppose to start my cycle on 9th on January, but I started the 2nd. (Which is unusual) for the past couple days i’ve been spotting and it’s kinda brown. And my period itself only lasted a few days. But I took a pregnancy test bc im getting pregnancy symptoms (I have a 19 month old) but it came back negative. When should I test again? Really wanting to be pregnant!