Oh I feel for you. Bleeding is so scary during pregnancy. I have two stories of this happening, both around the 6 week mark. The first was in March this year where I went to the toilet in the morning to be faced with lots of blood (including clots) and this resulted in a miscarriage. This pregnancy I had some bleeding at around the 6.5 week mark. It wasn't as much, but there was enough that some was on my underwear (I didn't just notice it when I wiped). Anyway, that blood was mainly brownish and became just spotting pretty quickly and after a few days stopped completely. I haven't had any more since and am now at the 13.5 week mark! So while I can totally understand your concern only a small amount of blood should be ok. I'd still ring your doc on Monday though as see if you can book in for a scan, that's what I did this time and seeing the little heart fluttering away was such a big relief!