### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
hello, last year october i had about 4 weeks of heavy bleeding. took an ultrasound and it was discovered that i had cyst on my ovaries. my periods were always irregular but the longest id go without a period was two to three months. since getting the bleeding to stop last october i beefed up on vitamins- folic acid and b complex especially and also was taking a heavy dose of herbal medications. what concerns me now is that i havent seen my period since, yes ive had unprotected sex since that october in fact that november. now its a whole lot of months later and i want to know what are my chance of being pregnant. i did one of thoshad a e pregnancy calculator things and when asked to fill in my last period i did which was oct 26 2012 and it told me the day i might have conceived which was the exact date i had intercourse. im now experiencing naseau, indigestion, mood swings, weight gain, alot of sleeping and always tired, breast tenderness at times, what confuses me is that when i researched PCOS i read that it mimic pregnancy symptoms and i took a hpt which had a negative result but i know my body ive never missed a period for this long Could i be pregnant?

### output:

Hi, Thanks for the query. As you are having irregular periods it is difficult to guess the time of ovulation. So though you are having some symptoms of pregnancy just by them, we cannot confirm or rule out the pregnancy. As some other conditions as you told PCs etc. can present with this kind of symptoms. So you once consult gynecologist, get examined and go for ultrasound. By this the chance of pregnancy can be rule out and also the possible cause for your amenorrhea can be made out. For more details you can ask me through: http://www.ChatDoctor .com/doctors/ Chat Doctor. 