Three-year-old suddenly shouting, biting and having tantrums at nursery and home

[MamaBear81]

My DD is 3.3, and the last month or so she has changed into a completely different child.
She has very good vocabulary, but lately when she wants something, or is annoyed by something, instead of using words she’s just shouting “eh” .. it’s constant and it’s driving me insane.
She also does it in school and daycare, aswell as biting (or at least trying to bite) other children AND herself on an almost daily basis, and having tantrums where she throws her self on the floor and high-pitch screams, which is obviously disruptive to the class. And it seems like it’s making other children not want to play with her, because in most of the photos posted on the school app, my DD is mostly alone which makes me feel really sad.
It’s got to the point that I dread picking her up because I know all they’re gonna do is report back how naughty she’s been.
Shes just miserable most of the day, every day, regardless of where she is, who with, and what she’s doing. Taking her out anywhere has become a challenge, because all she does is throw tantrums over anything and everything.
It’s exhausting! Has anyone else has a similar experience? Please tell me it gets better 😫

Has there been any changes in her home life at all? New sibling, moved house, does her DF live with you etc? Any changes at nursery I.e new room that she’s moved to, new kids etc?

While her speech is fine I would get her hearing checked as glue ear is common in this age group. You might think she can hear a chocolate wrapper rustle in the next room but that’s not a guide to how her hearing really is.

You can also ask to speak to the SENCo and your HV for advice.

@Dreamerinme the only change really is her starting school. She started half days after the Easter holidays, but this behaviour started a couple of weeks later. It wasn’t happening for the first couple of weeks she was there.
She’s been going to her creche for over a year while I work 3 days a week, and has always been fine there until recently.
Her DF doesn’t live with us, no, but that isn’t a new change, we haven’t lived together since we split around a year ago.
I have spoken to her health visitor about it, but she just said basically it’s a common phase that children her age sometimes go through due to a developmental leap and not being able to regulate their emotions. I’m not so sure though, none of the other children seem to behave the way she does at school drop off’s... It didn’t help that while the health visitor was at our house, DD was behaving like an Angel and didn’t do any of the things I was trying to describe.