they allow fsbo's to list there
You actually can't list on Trulia as for sale by owner. You would have to pay for what is known as a flat-fee listing service to be on Trulia. Zillow is more FSBO friend ... more
No you are not able to list FSBO listings, try using Zillow. That is the best route to take other than Trulia.
you would have to look at your loan paper;
is there a pre-payment clause?