Thanks for writing to us.
Since you are six days overdue and the pregnancy
test is negative, there is no need to worry. The delay in periods seems to be due to a hormonal
imbalance. Taking sustain can help in bringing your periods after you stop taking it.
I hope this information has been both informative and helpful for you. You can consult me again directly through my profile URL http://bit.ly/Dr-Rakhi-Tayal