I think...but I am no native speaker... A women doctor is a doctor from women. A woman doctor is a doctor which is herself a girl. Doctors is just doctors. Plural of doctor.

After scouring the internet, I found an equal number of arguments for "woman doctor" as a compound noun, and "woman" as a noun adjunct in the term. I also found an approximately equal number of arguments for "woman doctors" and "women doctors" as the plural. I discovered (to my surprise) that there is no final authority for English grammar and usage, and that some issues in English grammar and usage remain disputed. This appears to be one of them. I think I'd start using the term "female doctors".

Yes, you are wrong. The plural form of "woman doctor" is "woman doctors". girlfriend - girlfriends boyfriend - boyfriends There you go!

Let me put it this way... What are the plural forms of ''tree surgeon'', ''ball boy'' and ''apple pie''? ;)