I raced as a junior for quite some time when I was a teen. Steve Larson was an amazing junior at the time. He would race with the juniors and then race with the cat 1-2’s. I digress! I would recommend a newer saddle that allows the blood to flow better in the groin area. Make sure you get out of the saddle every ten minutes or so and that should help alot. As a previous poster stated, making sure your seat height is correct and making sure it’s level is very important. Stem length has a direct impact on how much weight is dispersed between the bars and the seat. In short, change your saddle and make sure you are properly fitted to your bike.
The restriction of blood flow may affect how much you turtle and your flaccid hang. Other than that, I don’t think you have much to worry about.