Cause for concern?

Mindy
I am 36 + 3 with my first. I'm not real certain what to expect or what 'normal' is, but tonight I had some spotting. Most of it light pink but some of it bright red. I can feel the baby moving. And I know from last weeks appt. that I was dilated 1 cm and 90% effaced. Is this possibly just from capillaries rupturing or should I be concerned?