Late but still BFN..

I skipped a cycle in October, but since then I've had 33 days and 34 days cycles. I am currently in CD 38 and no AF. I got BFN on the 14th and this morning. I feel like I should see a BFP if it's actually our month, so I'm thinking I may be just skipping another cycle like I did in October. It's driving me crazy not knowing! Anyone else experienced this? What's the latest your BFN turned to a BFP?