random discharge?

Learned I was preg 2 weeks ago tomorrow and have had no colored discharge (or any discharge for that matter) until a little last night, this morning, and just now. I know spotting/discharge is normal, esp in the first tri, but I'm a little nervous only bc I haven't had any thus far. It's barely a tint of brownish pink, not red at all, and only there when I wipe. I've had a little bit of intermittent cramping for the past 3 weeks and not much has changed with that. No other symptoms worth mentioning. Anyone know if I should be concerned about the discharge? Might call my doc tomorrow just to be sure...