Kamemberg

Help me please, you are my only hope ! Allright I just created my first lightsaber however I accidently got the dual bladed lightsaber and I can not use it T-T Can I change it and get a single bladed lightsaber ?? (I didn't save the game before choosing, so I guess there's no going back) (Sorry if I posted this twice, I am new here and I can't see my previous post...)