<s>[INST] i have always taken the two tablets of postinor 2 in a single dosage but in a month s interval for about two years. i stopped using it for about three months ago and i have always had my normal periods even though i have continued to have unprotected sex with my husband. could this have caused any side effects that stops me from conceiving? thanks Rhonah [/INST] Hi,Thanks for the query. Emergency contraceptive pills will have high dose of hormones compared with regular contraceptive pills. Repeated usage of emergency contraceptive pills can lead to problems like hormonal imbalance, menstrual irregularity etc.For more details :   The usual recommend gap between two emergency pills is two months. As you are not having menstrual irregularity, there may not be any problem for fertility. As you have used the pills for longer period, better to avoid emergency pills from nowonwards. You once go for ultrasound to check the uterine size, endometrial thickness, ovaries etc. Then track the ovulation in next cycle and plan intercourse around that period. This will increase the possibility of pregnancy. Take care. </s>