Light bleeding is normal up to 12 weeks, known as implantation bleeding.
With my second I started bleeding at around 9 weeks he is now a very healthy 8 year old
Bleeding/spotting can be very normal. However, it can also be a sign that something is wrong. My last pregnancy they said they couldn't scan before 8 wks so I had to wait 2 wks with slight blending every day, no cramps and was found to have a had missed miscarriage. This pregnancy I bled also, so was scanned at 6 wks when they found a heart beat. I was so relieved. Bleeding stopped after a few weeks and all well at week 19. Ask your doctor for a scan (an internal, vaginal scan). It's the only way to know.
I did at 9 weeks I bleed for a week now I'm 34 weeks all is good