There are a few reasons for why the uterus measures larger than the dates. The most common reason is you are further in the pregnancy then you think. But since you had an ultrasound exam, this is not the case.
Another reason could be you are carrying more than one child, like twins. But if you had an ultrasound exam, they should have seen this (although this can be missed).
Uterine fibroids (benign muscle tumor) of the uterus can make the uterus larger then you think.
The other thing it may be is your doctor is wrong. It is just an estimation. I would not be too concerned about it at this time.
When you see your doctor, ask him about what the ultrasound exam showed. You can also call the office and speak to someone to read you the ultrasound results.
Uterus Larger than the dates:? = wrong date (LMP) =polyhydramnious (excess amount of Amniotic Fluid in Uterus) =Larger baby (macrosmia) =multiple pregnancy =Molar pregnancy =Uterine fibroids =Pelvic mass
Uterus Smaller than the dates ..? =Wrong date (LMP) =oligo hydramnious =Smaller baby (microsmia) =head engaged too deeply =genetic (maternal paternal small size) =Intrauterine Growth Restriciton (IUGR) =Intrauterine death (IUD)
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