terrible two

[letsstickmyhandinthere]

My DD has just turnt 2 and it's like a switch had gone off in her brain.
She screams when you try to tell her off and lashes out at us. She's massive for her age so it actually hurts when she does hit you. Her latest activities involve throwing stuff with really good aim at my head or launching stuff in ds cot (he's 3 weeks old).

I've tried telling her no and removing her from what ever she's not meant to be doing. But she just goes straight back to it. No matter how hard I try DD just doesn't seem to listen or acknowledge anything anyone says to her.
I know she's just being a toddler and is curious but I'm desperate for ideas to get her to start behaving a bit better. I hate telling her no constantly.
Any advice will be really appreciated

I have been there! At that age distraction was the easiest (only!) way out of a tantrum, as explanations were too complicated to understand. However, if she wants your attention (likely with a new baby), then withdrawing your attention/presence might be the answer? Also think of what you can change on a positive front too - rewarding her for good behaviour with lots of attention if you can too. But mostly hang in there!

Have you tried whispering?
Whenever a new baby arrived in our house (many times) -I tried this - whisper during a tantrum that if the house is quiet when the baby is asleep you get time to do an activity /watch TV in peace!!
Dc needs to learn being quiet with a sleeping baby =special big sibling time! . Still early adjustment days after just 3 weeks in with a baby and it's rough!!

Thank you for the replies,
I like the whispering idea, I spend a fair amount of 1 on 1 time with her and she never seems bothered if I'm feeding or my attention is on DS. She seems to kick off when she has my attention.
I changed her cot into a bed on Monday as a distraction from DS and it seems to have completely changed her attitude. She's so much calmer in herself. She doesn't take long to settle and gets up in the night to check on DS when I'm feeding him then takes herself back to bed.
I've managed to turn her throwing game into a sharing game as well. Instead of her launching stuff into DS cot she carefully places them in.
Going out is a massive issue she goes from bad to worse.... in a shop she screams and pulls everything off the shelves. I'd love to have her out of the buggy but she can't walk properly yet ( medical issues) so that's not an option yet.