Hi and thank you so much for this query. I am so sorry to hear about this absent periods. This drug is actually a birth control pill and can also be used to regulate cycles. However, in a client with irregular menstruation and who is also hypothyroid, th most likely cause may actually be a poorly treated hypothyroidism. I will suggest that he takes a look at your numbers and symptoms and make sure they are good before turning to hormonal regulation of this irregular/absent menses. If this is the first time that you did not see your menses as intended, then you should be tested for possible pregnancy. This is the most common cause of missed menses in women of your age. This drug is not used for abortion. If you are not too sure about whether you are pregnant or not, please do a rapid home pregnancy test. This will clarify this within minutes. I wish you well.I hope you find this information useful. thank you so much for using our services and fee free to request for more information if needed. Thanks. Dr. Ditah, MD.