Thanks for the query.
I understand your concern.
The possibilities in your case are:
-Ovulatory spotting interpreted as menstruation.
-In short length menstrual cycles also ovulation is possible.
-Sometimes in early pregnancy, bleeding on expected date of periods
can be seen as small gestational sac cannot completely obliterate uterine cavity etc.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.