I heard woman spot throughout pregnancy hun and it be normal so no worries. If you are worried though call or visit doctor :-)
The best thing to do is go lay down on the couch or in bed and rest. Then give your doctor a call and see what they want you to do.
I also had a scare today I was at work and felt my period come. Im 12 wks, I drove to the hospital they did an internal check to see if my cervix was closed and Oh Yes it was. I was so pleased!! Apprantley its normal to bleed during pregnancy some women do