I would call up and explain your chart temps say one thing but your CM says another. Let her figure it out for you. No point in your stressing if she can offer a solution. Stress is never good, but moreso when TTC!
I worried about my LP for a good few cycles but did a fair bit of research and found so many sites said the same thing, 10+ is fine. Here I am 18 weeks gone, so it must be able to sustain a pregnancy. However, I am glad your doc is helping you as much as she can! I will keep all my fingers crossed for you!