Ouch, that smarts! If your seat is uncomfortable while riding, look into seatposts. Shock absorbing seatposts are one bicycle part that has been growing in popularity as more and more bikers look for greater comfort on the road or trail.
Seatposts are affordable and offer options to suit personal needs:
• One looks like a seatpost and contains a spring that slides up & down in line with your bottom bracket
• A more complicated design absorbs bumps by moving the saddle horizontally instead of up and down
*With the first, the height of your seatpost changes; with the latter the distance to the handlebars changes. It's all a matter of personal choice.