If you suspect that you may be pregnant and you are taking a contraceptive pill like Mircette, it is wise to stop taking your pills until you have at least carried out a home pregnancy test - this will
ensure that there are no risks to the fetus. You may be wondering though, if a home pregnancy kit works by measuring hormone levels- and you have been taking synthetic hormones in your Mircette contraceptive pill - "Will I get an accurate result from my DIY test?
Pregnancy tests do not measure estrogen and progestin, the two hormones in combined oral contraceptive pills so even if you get pregnant while taking an oral contraceptive, you can rely on the result of the test being accurate. Taking Mircette will NOT interfere with your pregnancy test result.This is true whether you are still taking Mircette or have recently stopped taking it because of your suspicion that you may be pregnant.
Mircette is an extremely effective oral contraceptive pill so it is highly unlikely that you will become pregnant while taking it, unless you have missed several days of taking your pill. If you have stopped taking Mircette or any other brand of oral contraceptive pill, now is the time to decide if you wish to become pregnant now or sometime in the near future. If you do not wish to get pregnant at this point in your life, you should resume taking the pills and use back up contraception for a week.
But don't estrogen levels rise when you are pregnant and oral contraceptives, like Mircette, contain estrogen?
Yes, when you are pregnant estrogen levels are higher but this is NOT the hormone that is measured by a pregnancy test kit. All pregnancy test kits measure beta HCG (a placental hormone called human chorionic gonadotropin). A urine or a blood sample can be used to measure beta HCG.
Most home urine pregnancy tests will turn positive 10 - 16 days after conception occurs. If you were not taking oral contraceptives, this would be around the time of your first missed period. When you are on oral contraceptives, ovulation could have occurred at a more irregular time so that if the pregnancy test is negative, you are either not pregnant OR you are less than 14 days pregnant from the date you ovulated.
If you were to become pregnant while taking oral contraceptives, a normal 'withdrawal bleed' would not occur.
Source: Dr. Rick Jelovsek MD.
