If you can play, it can be overcome. Sure, taller guys are easier to spot but the better players will play. I know a 5-6 kid who was a junior last year and is now a senior. His dad asked me if I thought he could play D1. His dad said, "What about his size?" I said he has the skills to play D1 IMO. In a week or so, he is going to sign a national letter of intent to play for a D1 MAC school here in Ohio.
Of course everyone must know about Eckstein by now. A walk-on at Florida who became an All-American and is now a multi-millionare ss with the Cardinals. Don't let size be an excuse. At 14, I highly doubt you are done growing
Focus on your baseball skills and let God handle the rest.