Implantation bleeding?

Is this implantation bleeding? Should I take a test? I am on combination birth control pills and I’m pretty good at taking them, sometimes I am late though... I always use a condom though no matter what. I’m on my 3rd day of my placebo week and this is the bleeding I am having? Usually by today or tomorrow I have steady bleeding and can fill up at least a pad but it’s very light this time... Am I pregnant?

**Yesterday my underwear was stained with dark blood and my pantry liner had a few spots but not a lot. This picture was taken this morning but I am still having dark brown or light blood. It is not enough to fill a tampon or pad yet...**