Can low thyroids be caused by pregnancy? Could that affect pregnancy test results?

Can low thyroids be caused by pregnancy? Could that affect pregnancy test results?

I'm young (21) and pretty healthy. Suddenly, in December, after I had unprotected sex, my periods were very light (1-2 days) for 2 months and skipped this month. I have all the signs and symptoms of pregnancy. I had a blood test for preg 1 week ago and it was negative and also tested for thyroids. My doctors called, suprised today to tell me I had low thyroids. I have read up on the symptoms but some still don't explain the weird dreams, gaining weight in stomach and breasts only, producing milky discharge from breasts, etc. I have a sister who didn't find out she was preg until 16 weeks through ultrasound. I've been tested for thyroids within the year. Why do I suddenly have it? Can I be pregnant and hypothyroid is caused by that ( I know it happens in pregnant women)? Can low thyroids affect pregnanct test? If pregnant I would be 13-14 weeks.

User Comments

1. Well, if you had a blood test & you were neg. for being pregnant. I'd say you're definitely not.
   
   On the thyroid. It just happens. I had it happen to me all of a sudden. It's very treatable w/ a pill a day. It isn't caused by pregnancy. It's a gland in your body that produces too much or not enough of something.
   
   If you are pregnant, you have to take excellent care of your thyroid. If you don't the baby could have a problem & have problems in delivery. It's nothing that blood tests every 4 weeks & pills can't handle though :)