I am a 19 year old female. i am concerned of my period i haven't had one in 5 to 6 months & i have taken a pregnecy test it said no. and lately my stumick has been itchy . what could be the problem?

As : As doctors, the first thing we do when we hear a woman is having a light or missed period or abnormal spotting, we check a pregnancy test. You can either take a home pregnancy test as long as it has been 5- 6 weeks since your last normal period, or you can go see your doctor and they can test you. A home pregnancy test is 97% accurate if taken a week or more after the missed period. Since you have already had a negative test, this is probably not the cause. There are other reasons besides pregnancy that can cause a woman to miss a period such as: stress, poor diet, weight loss, excessive exercise or a hormone imbalance such as with a thyroid disorder or poly cystic ovarian syndrome. Since it has been 5-6 months since your last period, you should definitely give your doctor a call. Hopefully, once they discover the reason for your missed period, they can treat you and get you back to a regular cycle. Good luck!