Ralph J Covered it pretty well but I will expand on what he said with a few other facts.
In reality you only need one AME to sign you off. With that in mind if the first one says you are a no go that does not mean that its said an done. Another AME may have a different opinion and sign off on your medical. An AME may be able to give you a good feel if not a straight answer over the phone if you can accurately describe your condition. I see you have this tagged as PPL so I will assume you are going for you PPL and asking in that regard. If you are talking about an aviation career I am under the impression that some of the majors do not let you chose your own AME and may make you go to their in-house doctor. This may be an issue down the line if your local AME cleared you but the airline you eventually work for has a different opinion.
While still under debate, third class medical reform may change the playing field for all of this and you may no longer need a medical cert to fly private.
AOPA is a great resource for this kind of thing and they are one of the big parties advocating for third class reform.