It is not uncommon to experiencing some light bleeding early in pregnancy. This can be due to the
implantation of the baby in the uterus,
or due to breakthrough
bleeding when hormone levels are not yet high enough to completely suppress your period. I would recommend that you call your doctor about your concerns. Your doctor is best to determine if the bleeding that you have experienced is cause for concern, or due to wine of the above causes.
I hope this helps.