low progesterone

Lindsey
After a year and a half of trying to conceive and no luck, my doc started running some tests. She had me come in for my day 21 progesterone test (where 15ng/ml or higher means ovulating healthy). My result was 1.6ng/ml. Feeling pretty defeated right about now. Have any of you had low progesterone? Have you been able to conceive and carry baby to term? What treatment did you try? Any advice would be great, thanks ladies!❤