Starting natural progesterone

Alicia • Sun, Jul 26 2015 • My husband and I married in Sept 2014 and have been trying to conceive since. We did get pregnant in Feb 2015 and miscarried at 7.3 weeks. We hope to be successful again.

When do I start this? Right after ovulation? Up until I get a negative preg test and than stop. I have a approx 35 day cycle. Help?