C-Section scheduled

Today we had our monthly visit to the doctor. All went well. I am measuring at 27 weeks (for a singleton) but I am just 21 weeks. We scheduled our C-section date for March 19th. However, the doctor doesn't think I will make it that far. He already has given me a doctor's note for work. My last day of work will be Feb. 28th unless (God forbid) something comes up. Next ultra sound is Dec. 2nd. Next doctor's visit is Dec. 15th.