I spotted pretty bad last time too, so I'm trying not to freak about it. But this time I'm having lots of cramps still, and the spotting has arrived way earlier than last time (last time I spotted around 7/8 weeks).
I'm not going to call the doc yet, there is nothing they could do about it anyway. I'll call if it doesn't stop by tomorrow. But any spare t&p's you have would be helpful!