Thanks for writing to us.
Since you did a pregnancy
test 2 weeks ago, it is best to repeat the test to rule out any late conception. If the pregnancy is ruled out then a hormonal
disturbance needs to be considered. This can be detected with few blood tests under the guidance of your gynecologist.
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