nervous at 36.4wks

Ra
Found out I'm 2cm dilated today and 50% effaced. I'm a first time mom and not due until may 12. I went to be monitored and I'm not in labor but I'm so nervous she'll come early! Doctor has me on bedrest for 4 days. 
Does anyone have experience being that dilated for a long period of time!? Help me feel better. I'm not ready!