Trade in the Tern and get a Birdy, Downtube, or some other fully suspended bike.
Saddles are very difficult, you have to expect some pain the begin with whichever saddle you have, only if it doesn't improve over time should you think about changing it, unless it's a Brompton where the saddle is actually a medieval torture instrument disguised as a bicycle saddle.
Last edited by Diode100; 04-01-17 at 11:46 AM.