Certainly you exhibit some of the symptoms of
ADD. You are also of an age that did not focus on girls in public schools who had
ADD. All the attention tended to go to those hyper little boys. So its entirely possible that you were overlooked, specially if you had the intelligence to "get by".
A site that you might be interested in checking out is - http://jeffsaddmind.com/
Its for adults with ADHD, but a lot of it applies. Take a while to go through it.