CD 34 - no AF YET

Melanie • 29yrs - TTC 6months ago- never used birth control
Here my calendars. Stopped tracking and bbt when i got 5 neg opk in a row on CD14,15,16,17,18. I usually hv a cycle of max 30 days. Glow moved my expected AF from July 15 to July 20. What is going on?