Infertility treatments

Is anyone able to provide me with their experiences related to infertility? I am curious if how the process works. I recently started TTC with my husband but have had irregular periods since I was 19 (I'm 27 now) and can't help thinking the worst! I am currently getting my periods about every 10-11 days and it lasts 3-5 days. 
Would like to know if you were able to get answers quickly or if it was a long drawn out process and what the testing consisted of. 
My appointment is August 7th and I will be taking 2 months worth of tracking information to my doctor, that is what we discussed I would bring to her at my last appointment when I told her we wanted to start TTC. 
Much appreciated!!