10 day LP

Has anyone conceived with a 10 day LP? Mine used to be 11 days and after having my son 18 months ago I noticed it’s gotten shorter. A few cycles were 8-9 and now I seem to be at 10. I had a chemical pregnancy beginning on March and now can’t seem to get pregnant again. We’re entering our 6th cycle. It took 7 with my first. I told myself I wouldn’t get discouraged this time around but it’s starting to creep up in me, I’m so afraid I won’t be able to give my son a sibling and am experiencing secondary infertility. I feel so blessed to have him of course but still feel so sad I can’t get pregnant with another.