Spotting.. Sign of Pregnancy?

Ke

Ladies - has anyone else experienced this? I finished ovulating Thursday, February 7. Then Friday morning I woke up to spotting. I put on a pad assuming my period had started (it isn't due till the 19th so it'd be very early but periods are weird). Nothing happened, I'd only have mucus with a bit of blood mixed in. So I take off my pad and wait and then Sunday evening I had a bit of spotting but only mucus with a tinge of pink or brown. I've been really crampy Friday till Sunday but I'm also breastfeeding my almost 10mp old, so that's not a reliable way to tell if my periods coming on or not. Does this sound like s first sign of pregnancy?