6mo DD makes this high pitched scream/squeal/screech, which she picked up somewhere around 4mo. She goes through phases of using it a lot and has just entered another one. She did it throughout most of the day yesterday and just started up again this morning. I'm not sure, but I think it indicates some kind of distress: she often does it when she's rolled over on her tummy and is frustrated at her inability to crawl, or when she is very tired and resisting sleep. Yet she also often seems happy she screeches and then looks over at me with a smile.
The sound is actually physically painful. I love my DD, but when she makes this noise all I want is to get as far away from her as possible. How can I get her to stop? I've tried trying to fix anything that might be wrong changing a nappy, feeding, putting her back to sitting or her back (this last doesn't work at all she rolls back to her tummy immediately), picking her up and hugging her. I've tried saying a stern "No"; I've tried ignoring her; I've tried whispering to her or blowing bubbles to try to get a different sound. Nothing seems to work for more than a minute or so, if that.
I think she might be teething -- yesterday I gave her calpol thinking she might be in pain, but it didn't seem to help. She likes teething toys, but screeches around them.
Any advice? I'm not sure how I'm going to make it through another day of this...