###Human: Why has there been no bleeding after taking Unwanted 72? ###Assistant: Hello. It is not necessary that there should be withdrawal bleeding after taking Unwanted 72 (Levonorgestrel). They are high dose hormonal pills which may cause delayed periods too. If your spouse has skipped her expected periods, she can check her urine pregnancy test with early morning urine sample to be sure if she is pregnant or not. For more information consult an obstetrician and gynaecologist online -->