Patient :My girlfriend had her period around December 12-14 and we had unprotected sex on the 18th. She drank althea pills everyday for 21 days prior to her period on said dates. She never took any kind of contraceptive pills after that. Then she experienced spotting and cramps around December 24/25 and up until now her period has not yet arrived. What is the possibility of her being pregnant? December 18 should\\\'ve fallen on the \\\"safe\\\" dates to have sex based on the calendar method, right? She usually has a regular cycle of 28 days. Could the delayed menstruation along with other symptoms (spotting, cramps on the 24th) have been caused by the althe pills or the sudden stoppage of intake? Thank you so much for taking your time to answer. :)
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