Psychiatrist would be great because he is an md and can see whether or not something could help. There is absolutely nothing wrong with taking something to help you get through a particular rough patch. There is no reason to feel like a failure, who has to know except you? Makes you think more clearly and when you can do that it really helps with the situation.
You remind me of those women who want natural child birth but when something goes wrong they have to resort to a cesarean and then they feel like a failure. Holding a beautiful newborn in their arms that they created and still feeling like a failure. One thing I know as I have been through two childbirths with my wife is that there is nothing "natural" about childbirth, whew, rough stuff. lol