I started my period on Oct. 9th. On Oct. 12th I had sex a few times with my bf, unprotected. Just to be safe, I bought a plan b pill and took it in the 2-3 (72 hour) after sex happened, period so that it was still effective. I didn't notice any side affects maybe some tiredness. It is now Oct. 20th and my period is back and its not light or like spotting its a full on period... I'm very confused. I just started my period 11 days ago & it ended the 13th due to sex. Now, I have it again? Seriously confused.
Plan B is a large dose of hormones and can do this. Its only intended for use as an emergency contraceptive. Just having unprotected sex isn't an emergency. There are several reasons for that. The large dose of hormones is hard on your body, its only 80% effective, regular birth control pills are 99% effective, and the more you use it, the less effective it becomes.
- Plan B Information for Consumers
- Plan B Information for Healthcare Professionals (includes dosage details)
- Side Effects of Plan B (detailed)
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