I had some light bleeding when I was about 10 weeks. It was brown and just enough to get into my underwear but it lasted several days. I also had a scan and they couldn't see a problem.
My doctor was great and told me that it can be the sign of a miscarriage and the bleeding will get worse & if thats the case it's quite common but also that most of the time bleeding is nothing to worry about and seems to be just one of those things. He said the majority of women who have some bleeding go on to have normal, healthy babies.
I think as a rule the lighter the bleeding the less risk there is. It's also a good sign if you don't have cramping with it. I had really bad cramps with mine though & was still ok.
I hope everything goes well for you at the scan.
