A couple of details would be helpful. For example, what type of saddle do you have? Has your tour resulted in riding more miles per day than you usually would? Many folks discover that the saddle that is perfectly fine for short or infrequent rides becomes a pain cave when used for multiple back-to-back long distance days. That's why most of the tourists you see riding PCH are on Brooks B-17s (although perhaps you already have a well-vetted saddle).