Please help I had an ultrasound and my baby looks 12 weeks according to doctor but I had sex on February 5th is it possible for the baby to develop as a 12 week. When its 10 weeks? Because I know when I had intercourse but the baby looks like a 1212 week baby has aby one had thia happen please tell me your details?

Do not worry an ultrasound is not exact to the day and being told your baby looks 12 weeks and is only 10 weeks is not a big deal. But if you do the math your are almost 11 weeks

Were you 16 on Feb 5th? Why are you concerned about this? Did you plan to have this child?

Your baby is measuring 12 weeks when you are 10 weeks? Is that correct?

If it is, it doesn't matter. All of dating is a guess with a two week window either way.

Agree, does not matter, don't worry about it, age dating is only estimates based on average size, to get average size, some babies are larger, some babies are smaller