Those three characteristic signs of pregnancy – nausea, tender breasts and food cravings or dislike for certain foods – are enough to make some women very happy or get very upset. It all depends on how one views pregnancy. But, for the woman who is happy, if those signs are doubly enhanced, then the first thing to do is to get an ultrasound done. During the first month, it may not be possible for everyone to get a confirmation that you could well be carrying twins. You will need some more patience before excitedly announcing to family and friends : “Hey, you know, I am having twins ! ‘’
To make that announcement, you would have to wait for another couple of weeks. But, the symptoms of having twins could be gauged from the enhanced feeling of morning sickness, food cravings or aversion, tenderness of breasts and a slightly enlarged stomach for a four-week-old foetus. In other words, pregnancy will be written all over you, so to speak.
At this stage, many a time, an ultrasound would not even show the presence of two embryos that would grow up to be your twins. But, to answer the question uppermost in your mind — whether the twins are going to be identical or non-identical, we can tell you how it happens.
The identical ones are born when one egg has been fertilized by one sperm and for reasons unknown as yet, the zygote splits into two. In the case of the non-identical ones, it means that two eggs have got fertilized by two separate sperms. In other words, it means, the parents of the identical ones would get nine clear months to decide how to identify each of them. At least, you can debate about it and have a hearty laugh.