I'm guessing you need to try another saddle (or 2 or 3 or more). I bought two saddles from Terry, with the plan of sending one or both back. They have a 90 day "ride it and love it" guarantee. I hear some LBS will let you try saddles as well.

The position of the saddle is another possiblity as some have said. Also, do you adjust how you sit as you ride? If I start to feel sore, sometimes I'll just stand for a few seconds, maybe use that opportunity to sprint. Or simply adjust how I'm sitting on the saddle so I'm putting pressure in a slightly different area.

You might want to go to terrybicycles.com and read about their various seats and see if there are any that seem like they might work for you. There are lots of makers, but Terry seems to be a favorite among women. I keep my search in the "performance saddles" section, which there are 5 or so to choose from. It sounds like you might want a performance saddle as well. (I have no idea what your current one is).

Also, your bike shorts could be a factor. Trying something different might help. And using a lubricant like Chamoise Buttr might certainly help if you're not already doing that.