Can you get pregnant if you had before you had your 1st period ever?

i started havin b4 i ever had my period i was 13 it was a very long time ago n i'v had unprotected wit quite a bit of my ex bfs n i'v never been pregnant n now i'm gettin married n tryin 2 have a baby but i'm startin 2 wonder if i messed some thing up doin dat n now cant have kids its that possible???