Can I get lead poisoning from pottery from china?

Hard to say. There are lead testing kits that can give you a quick answer, but you'd have to have the pottery in-hand to do the test.
Possibly. Here are two articles which address your concerns. Lead levels in chinese pottery can sometimes be high. http://www.foodsafetynews.com/2011/04/several-months-ago-gerald-omalley/#.uu9hqrer_sg http://www.Wnd.Com/2007/06/41959/.