<s>[INST] I had unprotected sex and only had logynon BC... so I took 3 of the pills as an EC. Since then I have been going through the symptoms of a pre-menstruation.... tender breast, back pain... but 2weeks later no period... What shld I do? Should I be concerned about being pregnant? [/INST] Hello dairy understand your concerned took 3 pills of logy non after sex as an emergency contraceptive pill. But it is not correct dose. Ideally 4 pill should be taken as early as possible with in 72 hours and another 4 pill after 12 hours to prevent pregnancy effectively. If you had sex during fertile phase of period then there is high chance of pregnancy. Your absence period could be due to pregnancy, hormonal imbalance. I would suggest going for urine pregnancy test and or blood Chat Doctor test to confirm pregnancy by consulting gynecologist. Avoid stress, take healthy diet, Chat Doctor.  </s>