Feedback appreciated

I've been off the pill for 9 months. My husband and I have been TTC since. I have a pretty regular 38-39 day cycle. I know that's long but my doctor seems to think it totally fine for me. I use ovulation tests so I have a good idea of when I'm ovulating. I am 2 days late this cycle and tested this am and the tested negative. Should I be waiting longer to test? Should I be more concerned about my long cycle? Any feedback from anyone with an equally long cycle etc would be greatly appreciated as all my friends and family have 28-29 day cycles and have had little to no issues conceiving.