Feeling Sad!

Do you ever just feel so sad about not having kids yet , you feel like it's just not going to happen for you? That's how I feel , since I was young I always said I would have lots of children and here I am no kids yet . I feel in my heart it's not meant to be for me maybe because I want it so bad. Being a mother is something I've always dreamt of.  I'm 25 yrs old and yes to a lot of people im still young. But Age don't matter when you know what you want in life, and being a mother is something I want to be. Haven't used protection in 1 yr and nothing. Makes me feel very sad :/ and nobody will ever know how badly you want something more than yourself.