I got my period after taking Plan B pills even though I just had my period 3 days before.

well i took plan b around 30 hours of having sex with my boyfriend yet two days later i STILL haven't gotten my period. When i have taken plan-b one ste before I had always gotten it soon after taking the pills. Is this because the one step is a lighter dose of medicine than the two pills of the original plan b? cause this is the first time i have taken the one step and i'm a little worried... if ne one could help that'd be great =)

Then, I would assume that the bleeding you had 5 days after Plan B was breakthrough bleeding, and that if you have bleeding on/around the 19th, that would be considered your regular menstrual period.

Please know that you are not technically pregnant for 10-14 days after ovulation, which is why the confusion (you can assume you ovulated around the time of unprotected sex, so you would not be pregnant for another 14 days after that time).

Your responses are indicating to me that you want short "yes" or "no" answers, so please let me know if you'd like me to explain further about the 10-14 days and why you wouldn't know if you are pregnant just 5 days after unprotected sex.

It is a little confusing, as this information seems contradictory, but...

1. "The only way of knowing Plan B® One-Step has been effective is when you get your next period, which should come at the expected time, or within a week of the expected time. If your period is more than 7 days late, you may be pregnant."
[Source: Plan B One Step]

2. [This is the confusing/contradictory part]: "Side effects may include changes in your period, nausea, lower abdominal pain, fatigue, headache, dizziness and breast tenderness. Some women may have changes in their period, a heavier or lighter next period, or a period that is early or late."

So, your next regular menstrual period should start when you expect it to (however long your cycles are, assuming you are "regular"). The confusing part is, that one of the side effects of Plan B is "breakthrough bleeding", which means you may bleed in-between periods, and another side effect is Plan B can cause your period to be early or late, lighter or heavier than normal. So...you may not be able to distinguish if a few days of bleeding is "breakthrough" or "menstrual".

You said you began your period only 5 days after taking Plan B, and I am assuming this means you were not expecting your period at this time?

Most importantly: when are you expecting your next period?