And I found four threads on Louisiana docs for you...
Doctor Wanted PCOS drs. in Louisiana? New to Southern Louisiana- any docs? Friendly PCOS Doctor in Louisiana
I don't know of any doctors in Lafayette offhand. I think you're probably right to suspect that you might have to drive, at least to a slightly bigger city like BR. In at least two of the threads, there are recommendations for endocrinologists in BR.
Good luck!