Progesterone levels

Is there any good info anyone can share about levels and chances of conception? I had my first round of clomid this cycle and at 7 dpo I had my progesterone checked - nurse called today and said my levels are at 11.

In August when I had them checked at 7 dpo they were at an 8.

I read that vitamin C can help increase it so in August I started taking a vitamin c chewy along with my prenatal and I started drinking a glass of cranberry juice a day.

Is 11 high enough to sustain a pregnancy should I get pregnant? I am currently 9 dpo right now