@kay_ann
Oh here's a little story for you. One of my most nervous students for diving in the open water. He was a 6'5" 280 lb firefighter, the kind who busts through walls in burning buildings like the Kool Aid Man. I mean, if i hit him with my car, I wouldn't bother calling 911 as he'd be fine, but rather a tow truck as my car would be totaled.
So your nervousness is certainly not unheard of. It doesn't surprise me whenever anyone is nervous going in.
And if a 6'5" 280 lb firefighter can do it, so can you!
OMG. That reminds me when we did the surface swim navigation. That guy took off like a motorboat. No one could catch him when he went too far. I was worried he'd go into the shipping lane, get hit by a freighter, and sink it!