A
female
age
30-35,
anonymous
writes:Hey, really confused here!I'm on Yasmin contraceptive pill and earlier on I vomited about twenty minutes after I took it, so I took a another pill directly after and have kept it down. I'm just wondering if I'm on it for twenty days instead of twenty-one days and then have my seven day break am I still properly protected and will my period still come as usual or do I need to get a reserve strip and keep the twenty-one days?
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female
reader, Nime  +, writes (8 December 2010):
 Hi, although the bold print instructions will tell you you are usually still protected if you miss one pill, the manufacturer's fine print states that if you miss a pill by even 12 hours you should use a backup method for the next 7 days. This is because missing a single dose can cause ovulation to occur. Take note that the pill prevents pregnancy in 4 ways:
1. Suppressing ovulation.
2. Thickening the cervical mucus so that sperm have a hard time swimming in it.
3. Thinning the lining of the uterus so that a fertilized egg may not attach (abortifacient).
4. Changing the movement of the fallopian tubes.
In an ideal world, the pill would cause all 4 of these changes to occur at the same time, all of the time. In the real world, maybe only one or two changes are happening at the same time. It is estimated that there are 27 ovulations in 100 women using the pill for a year; some of these ovulated eggs may be fertilized, but cannot attach to the lining of the uterus because it's thinned by the pill. This is why the pill is really also an abortive drug. My point here is that there are several ways in which the pill can fail, so it is best to take it EXACTLY as instructed.
If you can keep the pill down, finish your pack of 20 pills, wait out your placebo days, then begin a fresh back. For all placebo days and the first 7 days of your new pack, use a backup method. You can never be too safe.
Since you had trouble with this pill, I'd recommend you take the pill at night, just before you go to sleep. You won't experience the side effects as much because you'll sleep through them. And while we're on the subject, I want to note what other cases will require you to use a backup method:
* If you have diarrhea or you vomit, because you may not absorb the full dose.
* If you're taking any of the following: antibiotics, high doses of Vitamin C, barbiturates, anti-epileptic medication or rifampicin for TB, because all of these will interact with the pill to reduce the quantity of hormones absorbed.
A
female
reader, Mjfbla +, writes (7 December 2010):
 Uhm..id tlk to your doctor if you body is rejecting it, it may not even be working
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A
reader, anonymous, writes (7 December 2010): You may want to talk to your doctor or pharmacist. If your body is throwing up to reject the pill you may want to talk to your doctor about that.
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A
female
reader, MsClara +, writes (7 December 2010):
You should ask your pharmacist to be sure, I'm sure they'll sort you out.
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A
male
reader, dirtball +, writes (7 December 2010):
 With hormonal contraceptives, such as this, it's best efficacy is when it is consistant. You may or may not have a problem if you just go 20 days. Your best bet is to contact your doctor.
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