Welcome to Healthcare magic forum.
Some bleeding or spotting can occur during early weeks of pregnancy
So you could still be pregnant and this could be not your usual period but pregnancy associated bleeding.This happens when the embryo gets implanted in the uterus , hence also called implantation
Other causes could be an ectopic pregnancy, an early miscarriage
,placental abnormalities or a menstrual cycle delayed due to stress & hormonal
The first thing you should do is get a urine pregnancy test and if positive an ultrasound
and blood beta hcg levels.
This can confirm your pregnancy and the cause of the bleeding.
Alternatively you may consult your gynaecologist if the pregnancy test is negative to evaluate for any hormonal problems.
Hope that answers your query.