When I went to doctors specifically for fertility issues they asked questions- plenty of questions. How long have you been trying? Are your periods regular? How long between periods? Have you lost or gained weight? Do you smoke? Sometimes they might even ask how frequently you and your partner have sex.
In my case, due to a very long cycle, they also drew blood to test my hormones and requested I have blood drawn around the time I 'shoud' be ovulating. According to that test I was not, though I have been pregnant (m/c) twice since then.
They may also ask your husband to ejaculate in a cup so they can check his sperm- it's shape, how it moves, and how many are in there.
Depending on whether you have other health concerns that can affect your fertility like PCOS, autoimmune, etc... They may also check your blood for your ANA (anti-nuclear antibody levels), various hormones, and especially if you have a high ANA and multiple miscarriages- all sorts of blood tests for things present in autoimmune disorders that can affect you, your fertility, and the future baby.
After these results come in you will likely have to come back to discuss options, whether IVF, Clomid, or otherwise.
As always, if you have long/absent cycles due to PCOS, hormones, etc... I suggest natural methods that helped me get pregnant after trying 3.5 years- soy isoflavones, Fertilitea or other supplement with Chasteberry/Vitex, coconut oil lube, Evening primrose oil til ovulation, and Soy isoflavones for five days in the beginning of your cycle in a decently large dose (Google) before trying other more costly methods.