CD19 and no positive OPK yet

Amanda 🐼 β€’ With my husband for 19 years, married 10 πŸ’ Postpartum RN πŸ’‰ Addison Sarah born 1/1/16 πŸŽ€ Lost baby #2 10/1/18 πŸ‘ΌπŸ»
CD 19 today. Still haven't gotten a positive OPK. These are from last 3 days. Have all been just super light. Pic is bad quality but they're all about the same. Previous days the same. Been testing since CD 14. Last cycle was positive on CD 19, but previous to that was around 15 and 16. What's going on?? Making me nervous!