Originally Posted by
ColinL
I would try the following:
Experiment with tilting the nose of the saddle down slightly from where it is now. If you have a basic seatpost, no more than 1-2 'notches'.
Keep riding, but don't ride more than 60-90 min at a time. This feeling isn't unique and it will go away as you get some saddle fitness, but you don't want to overdo it with some 4-5 hour sessions. Ease into it.
If it's a saddle/positioning issue it's not going to go away until you change saddles or move it in the right direction.