Pruni, my DS started behaving really really unlike himself just before his 3rd birthday, no one could believe he was the same child to what he had been like previously, friends were completely shocked. He was a nightmare. He started hitting etc. He's now back to his usual self to everyone's relief.
It does take time to settle in a new place, I did it a few times when my DD was younger. I found generally though that actually DD adapted faster than I did to moving mostly. One thing DD loved after moving was a little photo album full of pictures of where we used to live and her friend's etc, might be a nice thing for the two of you spending an afternoon doing. Hang in there, this will pass. Meanwhile make sure you get to know people, difficult toddler phases are much easier when you can offload to someone over a cuppa I find !