A lot of mothers are really worried about pregnant belly button pop out. Each woman can have it as you need to take a view of the fact that every pregnancy is different in its own way. In the case of some women, they are likely to keep it in the second half of their pregnancy while on the other hand, some replicate it in the first trimester itself. In the case of some women, they go on to witness bloating where their pants do become a little bit tighter. All this would emerge once they have been part of a positive pregnancy test.
As far as the first time mothers evolve they tend to develop a baby hump between 12 to 14 weeks of their pregnancy. If you are a lady who has already been pregnant earlier it might show earlier as well, for the simple reason that the pregnancy abdominal muscles would have been stretched out. Once you go on to touch 12 weeks, the uterus will go and expand beyond the pubic bone. Till that point of time, it was within the eye line of the pelvis and was visible on all counts. If the belly expands well before the anticipated time it could be due to constipation, bloating or gas to name a few symptoms. Belly protruding during pregnancy might also occur in case if you are carrying multiples as well.
Considering another angle do you really need to be worried if a popped up belly button is not shown. In simple medical terms, there is no need to panic in any way. You need to consider the fact that the uterus can go on to rest in various positions. Sometimes the uterus may be tilted towards the back and this might go on to showcase the symptoms of pregnancy much later. On the other side of the coin if the uterus is tilted towards the front this might be the same case as well.
If it shows late no way it means that you will find the baby to be small. The length of the baby could only be assessed when the baby does happen to be in the second or third trimester of pregnancy. If there does any reason to be really concerned, the doctor may ask you to go for an ultrasound. This would be to understand whether the correct due date has been given or not. In the case of babies who are small, there really needs to be monitoring to ensure that the baby is in the best of health.
In the midst of all this, you really need to figure out that the body type has a role to play. In the case of thin women, it would go on to show much earlier than women who have weight. Here the ideal time frame would be around 12 weeks. This same policy does apply if you have well developed and clear-cut abdominal muscles as well.