Hi Mummy mel
Little Jacob is not at that stage yet but sooo sounds like little toothypegs!!
My nephew was like that.... and I have heard that they get constipated because they are swallowing heaps of saliva.. its kind of like chewing gum for us... if we eat it heaps and swallow the saliva we can get constipated too.

Good luck with it mate... cant wait to meet her
xo