Implantation/Calendar pic, not TMI

Athena • Pregnant with baby #2 (#1 = angel), 31yo, DH 34
I had just a small amount of... something... on the t.p. this morning. It shouldn't be AF because I ovulated the 21st/22nd and am not due until November 4th. I'm right at 7 DPO. Could this be the somewhat rare implantation bleeding I've been reading about?