Keep on doing your training regime and as you learn the trade you will develope more confidence.
Try to stay focused and ask advice off the trainer on duty.
Take it one step at a time.
You know, practice makes perfect.
I remember before my first fight i puked my guts out from shear fear.
But as i grew more confident i learned to harness the fear and make it work for me instead of against me.
Don't think your weak or something. Just remember, you're still learning