I met a really nice lady and had a great date and we held hands and kissed during our first date and I asked her for a second date. Is it normal to be nervous wondering if she really wants to go or maybe she was just being nice and after she left, that would be it. I had called her about 2 days after our date and sent her a text telling her I had a great time and look forward. If she does not call me back, should I call or just forget it?

Call her again on Friday if she hasn't gotten back to you.
She is probably just busy right now.

Yes, you need to call her again in a few days, and ask her out again, but be specific.

Ask her if she'd be interested in going to such and such movie, or to a local event, or out for dinner.

That way, the ball is in her court, and if you don't hear back from her, then she's probably not interested, and you'll know.

The only way to find out if she's interested is to ask her out again. The answer is out there, you just need to go find out. So call her up and ask her out again.

I'd call her, and see what happens in a few days, but if she isn't available, ask some one else.