Clomid starting dose

C
Has anyone started on 100 mg of clomid right away? My specialist prescribed that for me (because I've been TTC for many months and have polycystic ovaries, though not PCOS). However, I have very regular cycles, am petite and 31 years old so not sure why I shouldn't start on 50 mg. I tried to find out why, but haven't received an answer. I don't live somewhere with many options for specialists and this one had come highly recommended. I am not a doctor and want to respect her advice, so not sure what to do...