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Does having two sacks mean twins?

hi alex,
i had a scan last friday and they told me there were two sacks, but they told me they were small or im not asfar pregnant, how do i work out how far along i am. i have not had a period since the 19th jan so i worked out to be about 8weeks. and being two sacks does that mean twins

Sarah...
Answer: Hi, Thank you for your enquiry. It does sound as if it is too early to determine if it is twins but it may be as the two sacs can indicate. Unfortunately it is very difficult to see much on a very early ultrasound. You may have to wait a few more weeks for another ultrasound to check what is happening. If you had regular periods (every 28 days) then dates are usually reliable for determining the length of your pregnancy. If you had irregular periods or they were further apart then the pregnancy is longer. Best wishes, Alex
Answered: 01 Apr 2008