I am 32 and I have tried for years to have a child I haven't been to doctor about this just wanted to know what some of the reason may be that I haven't gotten pregnant

There are many many reasons women can't get pregnant. Some reasons could be tubal blockage caused by tubal pregnancy or untreated STD; endometriosis, PCOS, or even low sperm count in the male.

The only way you will know for sure is to visit a doctor.