I knew I was having a boy at 14 weeks.
It's all dependent on how your baby is positioned. My sister wasn't able to tell what her first kid was because she (the fetus) had her legs crossed during the ultrasound. :-)
It's also a lot easier (for obvious reasons) to tell if it's a boy than if it's a girl.
I found out that I was having a boy at 15 weeks!!!! But it just depends on how the baby cooperates with the ultrasound tech.
The earliest a doctor will have a radiologist determine gender is about 12 weeks. Most wait until week 16 through week 20. Determining gender by radiology is not an exact science. A fetus could be in a position where it is difficult to see the genitals. Your radiologist may attempt to coax the fetus into another position where it is more visible. You could also consume something containing sugar, such as juice, (no caffeine!) which will make the fetus somewhat more active. Amniocentesis, if you must have one completed, is fool-proof in determining gender of the fetus through chromosomal testing.
The genitals of the baby may be visible in the sonogram
Only if you have a sonogram. (Or genetic testing)
At the first ultrasound at 12 weeks, or if you use a gender selection technique, before you even become pregnant... check out http://genderinfluence.com
If you know your rodents, you should be able to tell the gender of baby rodents at birth (I can).
A sonogram can usually tell the sex of the baby by 4 months.
By getting a nurse to give you a Sonogram. (otherwise known as Ultrasound)
By their tails and claws
after you ask or any time
no but it will tell you what the baby is when you name it!
There is a small chance a sonogram is wrong at anytime in determining the sex of the baby, but it rarely happens. You are probably carrying a baby girl. The ultrasound tech. will usually not tell you the sex if they are not fairly certain.
No. An ultrasound is the only way to know for certain what your baby's gender is.
No. Usually you can tell the gender at 18 to 20 weeks.