could this be possible?

After having a miscarriage last month.. I've been feeling off since then kinda emotional & not myself.. well lately I've had nausea & cramping & last week I had light pink "spotting" it wasn't really spotting plus my boobs & nipples are SUUUUUUUUPER sensitive. just NOW I figured I'd just test there's no way I could be pregnant after after miscarriage just last month.. it's the middle of the day I figured it would be negative.. I was suppose to start my period Thursday or Friday & I haven't started yet.. is this even possible? that line is pretty dark in person.. plus it's the middle of the day...