New to this section!

Hi there

I have over the past 6 months used the ttc section of this forum. Well after 6 months of ttc and just starting cycle 7, my husband and I are going for tests at the doctor and getting referred to the fertility clinic (you get referred by NHS Grampian after 6 months of ttc when over 35). 
My husband phoned the doctor today and is getting a semen analysis. I have an appointment on the 21st with my doctor to arrange tests. 
Can anyone tell me what tests that will be undertaken and the process? Currently my cycles range from 29 - 33 days with one cycle being everywhere! I have a short lp with the highest being 10 days but that can include spotting. 
Any advice / thoughts on this would be appreciated!