Language / Numbers in Polish - two different ways? [44]

Im looking for some help. I come from a family of 4 kids, 3 girls and a boy. We want to get tattoos with Polish words to reflect our heritage. Could you please help me with some words? We always say we are one of four, two of four three of four and four of four. How would you say that or 1, 2, 3, 4 or 1st 2nd 3rd 4th?

Ive heard two ways to say 2, dwa and sekunda, which is right?