Frustrated

We've been trying for months, almost a year. My cycle is 38 days long.. when my period comes its very very light for about 3 days then it done.. ive seen multiple drs. Who just down play it, ive been tested for endometriosis and even had a biopsy done and everything is fine. I cry every time i see a baby. How tf are you ladies getting pregnant?!? Any tips or advice