FTM TTC

Jasmine
My SO and I have recently started trying to conceive. My period is late, only by a day - but I am ALWAYS right on time. However I have not had any symptoms of my period coming. Today, when going to the bathroom I experienced bright pink blood - very little bit. Was wondering if this could be implantation bleeding? I took a pregnancy test yesterday when my period was late and it was negative. I've also been extremely tired - like 2-3 naps a day tired. I'm trying not to worry too much about it but I'm just curious. Thanks!