2nd time and beyond moms

This is my 3rd. I'm going to be 37wks on friday. Ever since my last appointment on Monday I've been extremely nervous about labor. I'm 3cm and my midwife thinks I may go any day now since I've been spotting and contracting. I never felt nervous with my others not even my 1st. Has anyone else experienced this? It's so bad today that I feel a little sick to my stomach