Progesterone levels

megan

I had an eptopic that lead to the removal of my right fallopian tube in 2013. Fast forward to March of this year I had a miscarriage at 5 weeks. I just had my progesterone bloodwork today and it's at 7.85ng/ml. Is that considered low and could that possibly be what caused my eptopic and miscarriage? We have been trying for 4 years now, with no luck.