Need some help!

Ra

So my husband and myself have been trying for another baby. Our son is 9 months old, and I breastfeed. I haven’t gotten my period yet. And today when I went bathroom I had spotting. I’m thinking it’s implantation bleeding because it wasnt heavy like a period and wasn’t bright blood. After work I took a test and it was negative. I have been have signs of pregnancy but I’m not sure wether to call the doctor and get a check up? Or just wait it out and see? I need advice please! 😊