About 14 weeks, more fluttering than kicks though. My two pregnant friends are also having trouble finding maternity clothes- no choice anywhere. I just wore looser clothes, I didn't buy anything extra except some light trousers with elastic in the waist.
It'll probably be a couple of weeks til you feel anything, NoM. My friend's daughter is about the same stage as you and she was worried that she hadn't felt anything yet. She was told it's normal. Some women feel something at this stage, some don't.
As for clothes, I wore leggings and big t shirts. If you need something smarter Next have a few nice things.