6'1 tall and 301lbs female TTC. Any tall big girls have success??

So as you can see I am a big girl. I grew up with the nickname Giant my entire life. I am 36 years old and my hubs and I are trying to convince baby #1. I have appointment for a fertility consultation on Jan 4th to see what our options are.

Rewind a few years: I have post pill anohrea. I had regular periods while using birth control from age 19 to 27. However, after stopping it after I got married my period never came back. I was put on provera which would start my period but have since been able to ever conceive. I have had doctors tell me that it's just my weight that is causing the issue. "If you drop weight it will happen." I did drop the weight! I went from almost 400lbs to 300lbs..And still nada. I am scared to death that my new doctor is going to delay treatment until more weight is dropped. As if it is just as simple as switching on a light switch. Has anyone had any successful IUI's or IvF's? I would love to hear about them...Just trying to keep myself from freaking myself out.