No periods for over a year, now pregnant

Dear Dr. Amy,

I have not had a period since March 2004. I do check to see if I am pregnant with home pregnancy tests and when I visit the doctor. In early December I was not pregnant. Recently, I noticed I felt different. My breasts felt different and I kind of thought I may be pregnant. So I took a home pregnancy test and I am.

Is it possible for someone to get pregnant when you are not having a cycle? I am very worried about this and a bit confused so any advice will be very much appreciated.

Thank you for your time,
LV

Dear LV,

It is very likely that you have a hormone problem of some kind, probably polycystic ovary syndrome or perhaps related to your weight (if you are extremely overweight). You should have been treated with Provera (progesterone) or birth control pills, since going for months at a time without a period can increase your risk of developing uterine cancer in the future. That will be something to address after your pregnancy.

Even women who have hormonal problems can ovulate on their own now and then. Since you ovulate 2 weeks before you get your period, it is possible to ovulate and get pregnant without getting a period. This does not mean that there is any increased risk to the pregnancy. An ultrasound will be able to estimate when you got pregnant and when your baby is due.

Sincerely,
Amy