around the size of a grain of rice.
I am currently 15 weeks pregnant and I've gotten estimates for baby size at 17 weeks anywhere from 3.5 oz. to 9 oz. It really depends on the baby and the mother and the pregnancy itself. The baby at this point it rapidly growing and will double in size from 15 weeks to 17 weeks, so the range that is considered "normal" is rather large.
I believe that its the size of a lentil bean.
The size of fetus is 4 to 5 mm at 5 weeks pregnancy and about half an inch or 1.25 cm at 7 weeks of pregnancy. Fetus grows by geometrical proportion with time. So you can calculate the size of fetus at 6 weeks by mathematical calculation. Say the size be X mm at six weeks. So you have 4 mm, X mm, 25 mm in the series, So X squred equals to 4*25=100. X is equal to 10. So the size of the fetus will be 10 mm at 6 weeks.
Baby is still growing size of a pea if that.
You are supposed to wait 4 weeks.
probably about the size of a golf ball. If you are 8 weeks pregnant your baby will be about and inch long. Your baby is about 3/4 of an inch long and weighs approximately 10 grams. * http://3dpregnancy.parentsconnect.com/calendar/8-weeks-pregnant.html
In 4 weeks
4 weeks
tadpole
1 &1/2 inches
If you mean 4 weeks after conception the embryo is about 1/6 to 1/4 inch (4 to 6 millimeters) long.