After I ride I have soreness on the inside edge of my sitbones, and then inside and forward on the pelvic girdle along the bone. When I start a ride I'm sensitive in these areas b/c they are tender from previous rides, but once I get going I don't really have any noticeable pain (if I think about it I notice the soreness but it's not enough that my attention is repeatedly called to it). Both my sitbones are on the saddle. I don't have any sores, chafing or bruising. Is this normal for a new rider and I just need to condition my butt more to the saddle, or do I need to try a new saddle? I'm riding a Specialized Ariel 143mm and it has a nice cutout that I really like.