You may need to adjust the height of your saddle, and to make sure it is level. Even a little tilt forward or backward can put pressure on the wrong areas. And if it is not at the right height, you'll get chafing from your hips rocking.

Make sure when you adjust it that they are little adjustments - 1/4 inch at most... go with it for awhile and see if it is better.

(This advise is paraphrased from advice given me this weekend by a shop keeper who was fitting me.)