At 6 week after fertilization there is what we call embryo which is unborn baby in uterus in early stages of development and the body features of growing baby in the embryo are nor much developed.
around about 5-6 weeks
Yes it is very dangerous because a baby can be born with special needs. Or wouldn't be fully developed.
Around 6 weeks
Up to 8 weeks after fertilization embryo is present which is unborn baby in early stages while foetus is an unborn baby in uterus in later stages of development (after 8 weeks till birth).
Baby cockatiels stay in the nestbox for 7-8 weeks.
Around Jan1st
You will never be able to see your baby's heartbeat in your stomach. But at around 6 weeks, you can see it in your womb via ultrasound. Usually over 6 weeks it can be heard through a fetal heart monitor too.
At 6 weeks the shape you will see on the sonogram will resemble a little bean or peanut.
not for 6 weeks
mice are totally developed at the age of 6 weeks, though they can be sexually mature earlier (around 3-4 weeks).
You will never be able to see your baby's heartbeat in your stomach. But at around 6 weeks, you can see it in your womb via ultrasound. Usually over 6 weeks it can be heard through a fetal heart monitor too.
Up to around 5-6 weeks! No earlier no later!