###Human: What is the reason for delayed periods if pregnancy test is negative? ###Assistant: Hello. I have gone through your history and understand your concern. I will try my best to help you. Do a repeat pregnancy test with urine pregnancy kit, if its negative, wait for period for at least seven to 10 days. If period does not come repeat it again after one week. As your pregnancy test is negative and this is happening for the first time, it is not a serious issue. Just wait and watch. The period will come naturally in another one or two weeks. You should take medicine to bring period only if it is not possible for you to wait. Otherwise, it should be avoided. I also want to know if you have taken any hormonal pill in the recent past or if you are a patient of thyroid disorder. For more information consult an obstetrician and gynaecologist online -->