Why don't I get my period ?

Heather
I am 26 years old and I don't get my period really I will get it for a day then it's gone . Last time I had a full one it was for 2 weeks almost . I was told I had pros but then I was told pretty much all women have that somewhat . I need help I do wanna be a mom and it's really difficult when I don't feel like I can have them