getting off progesterone

Hey all, I was put on progesterone suppositories at 5.5weeks I was told I would be on it until 12 weeks. Today I am 11.5 and my pills are out, I called my doctor and she said I didn't need to order anymore I was close enough to 12 weeks to stop now.  I know it's probably fine but I just get so nervous, when did everyone else stop taking theirs? I have an ultrasound tomorrow afternoon and can't wait, so nervous but then Friday I will be 12 weeks with my rainbow baby!