First trimester bleeding is any vaginal bleeding during the first 3 months of pregnancy
. Vaginal bleeding may vary from light spotting to heavy bleeding with clots. Vaginal bleeding is a common problem in early pregnancy, complicating 20%-30% of all pregnancies.Bacpainn ,headaches
etc are normal symptoms of first trimester,
Repeating the scan after a gap will tell us more about the cardiac activity of foetus.
So dont worry.