IS IT NORMAL TO BE NERVOUS, WHEN YOR FIANCE I GOING?

TO HAVE HIS BACHELOR PARTY? MY FIANCE IS GOING TO HAVE HIS THIS WEEKEND, AND I AM VER NERVOUS, DON'T REALLY KNOW WHY, BUT I CAN'T STOP THINKING ABOUT IT.. ANY SUGGESTIONSOF ANYBODY THAT ALLREADY BEEN TRU THIS..