Great question! Unfortunately, there's enough controversy about the answer to have warranted a whole blog post on the subject. The short answer, though, is that the G-spot (named for the German gynecologist Ernst Grafenberg, who talked about it in the 1950s) is a sexually sensitive area about a third of the way up the anterior (front) vaginal wall. There seems to be a rich plexus of nerves just beneath the vaginal surface in that area, which, when stimulated, may produce a variety of feelings: discomfort, urge to urinate, or pleasure. Some believe–and experience–that stimulation in that area leads to orgasm; this may be the specific source of vaginal orgasm (as opposed to the more-common orgasm from clitoral stimulation).
Being aware of the discussion of and theories of the G-spot is great; so is experimenting to see what sensations are present for you, in a spirit of creativity. Don't assume there's a "should" or an "ought" that you're missing. Please explore your own body, and embrace your own personal sexuality!
To ask your own question, use the pink “Ask Dr. Barb” button top and center on our website. You’ll receive a confidential reply via email, and your question may be used as the basis for a Q&A post here on our blog.