Okay mama's a little advice?

So I had a appointment today with my regular doctor I explained to her how I am feeling and told her in October it will be one whole year since trying to Conceive and she said she sending me to a gyn for lab testing for my hormones to see where they are at and we will go from there anyone know what I should expect? What do they test for? I know I'm asking a lot of questions just nervous and wanted to know what I need to know lol.