Implant blood?

Taylor

So for the past few weeks my husband and I have been super active between the bed sheets. Like latterly at least once a night. The past few days I've not been feeling to well and my CM is not normal. When I was pregnant with my second baby I had pretty much the same symptoms. Today when I got up and went to the bathroom I wiped and there was a tint of bright red blood but it was mostly dark brown. Could I be pregnant? Is it implant blood?