I have lost all feeling in only my right thigh for 12 hours now, there is no visible bit marks and I haven't done anything to it, hasn't discolored?

Numbness. Losing feeling in any part of your body without apparent cause is very concerning. You should tell your parents and see your doctor as soon as possible.
Nerve contusion. Please inform your guardian. Loss of sensory feeling in the anterior part of the thigh can be from meralgia parasthetica. This condition can come from wearing a tight waistband or belt that contuses a nerve that crosses from the waist into the front of the thigh. The treatment is to stop the contusing force.