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my mood is all over but no period!

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I have irregular periods infact i've not had one since jan. I started Marvelon just over 3 weeks ago and am now on my pill free week but i've not come on (I'm due to start the pills again thursday) I've not had sex whilst on the pill but had sex with condom about 3 weeks before. I've taken two tests both negative. I have a little 'period' pain, back ache and my mood is all over but no period! Very worried and hard for me to see the GP as im disabled and my mother would want to know why etc.
Please help

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replied July 19th, 2011
Menstruation Answer A25200
Welcome to ehealthforum,
You should have started using the birth control pills after having your periods. Since your periods are irregular, it is difficult to predict your ovulation (egg release from ovary). Unprotected intercourse at anytime can lead to pregnancy, if egg is present in your system around the time of intercourse. Since you were not on any birth control at the time of unprotected intercourse, you should have considered using emergency contraception within 24-48 hours of unprotected sexual contact to prevent pregnancy. If you have not had any sexual contact after starting with the birth control pills, pregnancy occurring after starting with the pills can be ruled out. If pregnancy is suspected, it would have occurred before you started with the birth control pills. Wait and watch for your periods/withdrawal bleeding. Do not start with the next pill pack if you suspect to be pregnant. Look out for development of any other new symptoms suggestive of early pregnancy if you suspect to be pregnant. If periods do not start or if you develop any other new symptoms, you should consider visiting your doctor/gynecologist for further evaluation and assistance.
Take care.
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