Very normal. A lot of the time its frustrating at not being able to communicate what they want to get or want you to know.

Baby signs is very useful during this period. With it they are able to communicate with words, well before they are capable of speaking them. We found it fantastic with DD1, the frustration never really got bad, when we worked out what she wanted, she could teach her a new sign to ask for it. Eventually she actually would want to learn new signs herself.