My older brother just proposed to his girlfriend last week and she said yes. He seemed nervous before and even practiced his speech in front of a mirror a couple times. It was funny watching him get that nervous.
They had already discussed about having a family and some of their goals. It was so obvious she was going to say yes. Most of the times, it's a given the woman will say yes. What can go wrong? Yet he was still nervous before proposing. If she's your long-term girlfriend, 99% she's going to say yes no matter how your proposal looks like. Is it normal to get that nervous over proposing?