At the age of 27 and never been pregnant before not even by mistake !

Sara

I am 27 years old and I have never been pregnant before . I have started a serious relationship which I can see he wants to have kids soon maybe not now but soon. I am honestly scared that I cannot have kids ! I have started recently checking my cycles which day I am overlating and it says positive. What is the best way to go about this is it to early to go and see a doctor? And if I do ! What do I ask specific ?