###Human: Why is there no period after stopping Primolut N and taking I-pill? ###Assistant: Hi. Although history is not complete, she got an overdose of hormones which might effect withdrawal bleed as well as periods. Stress, overwork, illness, medications, hormonal imbalance all can delay periods. Have serum beta hCG to check pregnancy. If no pregnancy, then wait for weeks at least before menstrual induction (tablet Primolute N 10 mg twice daily for five days and wait for bleeding for 1 to 2 weeks). Next periods could be irregular after withdrawal bleed but gradually periods will get back to normal as soon as the body gets rid of externally induced hormones (I-pill, Primolut N).  Missed periods post pill. Beta hCG. Beta hCG if negative have menstrual induction. Cocp (oral contraceptive pills) for regulating cycles.