Yellow - don't be scared about the appointment although I can perfectly well understand why you are.
Your argument is good, and is exactly how I persuaded them to give me Clomid. How old are you (ignore if you don't want to publish!).
My argument was that my remaining fertile window was getting smaller and smaller and that while my weight loss is and continues to be good; I was very unlikely to reach the target BMI before menopause hits. Therefore I was happy to take the Clomid knowing that it is thought to be less effective for more substantial ladies.
In truth, I don't think my body could ever be the right side of the BMI register. It just won't do it. I am solid, not particularly wobbly and I'm in proportion all the way down and am pretty fit and very healthy. I also have very heavy hair. {grin]
I'm glad the consultant listened to me; and actually although stern and quite scary, did understand what I was saying.
The only counter argument is that you are only allowed a certain number of treatment cycles (12 according to my consultant) before they take you off it because they think it might raise the risk of ovarian cancer. I countered that argument by saying that I was happy with a limited number of tries, and that in 12 months time I think I'll have pretty much kissed goodbye to my chances anyway.
Good luck.