So my DD has pretty a pretty good vocab. i always get comments at how well/much she can talk.
But lately (and inoticed but didnt say anything but DH actually noticed too which tells you something lol) in the past few weeks/ a month she started not saying things she used to be able to say fine like "bottle" and her favourite show "stella and sam" and other various things..

is this normal?
She sucks her thumb and we've had a pretty stressful few months and has started sucking it alot more (used to only do it when tired/upset) whereas she seems to be doing it alot more. she tried to talk around it, but everytime she does it with me i take her thumb out and tell her i cant understand what shes saying, and ask her again! (ive asked DH and MIL to do this also)
Im a little worried..