Hi @anonymousgirl , some variations in period cycles are expected during periods of stress during exam periods for example, however they shouldn't be less than 21 days or more than 35 days on a regular basis, and there shouldn't be large variations (>2 weeks) between your longer and shorter cycles. These would be features that require further assessment and potentially investigations to rule-out possible causes such as thyroid disorder or polycystic ovarian syndrome (PCOS).

You may not have anything to worry about based on your cycle and that one-off incident alone, however given the accompanying thinning of hair, you would benefit from further assessment to be assured that there are no underlying reversible causes such as thyroid disorder. I would recommend for your to speak to your parents about this and arrange a review with your doctor for a more detailed assessment. I hope this helps!

Dear @sebastian. It will be good to do a urine pregnancy test to ensure you are not pregnant in view of delayed menses. Menstrual cycle can be irregular especially if you are down with a cold or unwell. You might wish to consult your gynaecologist or family physician if you have persistent irregular menses. They might consider further investigations or start you on hormonal tablets to regulate your menses. Hope this helps.

Hi. I am afraid you have to get a pregnancy test done at some point, the earlier the better. The morning-after pill (Plan B) is known to cause irregular bleeding after taking it; failure of the pill to work is possible, especially if not taken in a timely manner. If your pregnancy test is negative, you can safely do nothing and wait for your proper period to start. If you are indeed pregnancy, then help is easily available to get your though this rough patch. Many clinics in Singapore, including mine, are able to provide the necessary counselling and support for unplanned pregnancies. Your first step is to determine if you are indeed pregnant. So please do get a simple urine test done, either at home, or in the clinic. Everything else will fall into place thereafter.