When is ovulation after positive LH strip test?

Rachel • Girl mama 💗💗💗 Baby BOY due in July 🩵

Could you ladies give me an LH strip lesson? This is my first cycle using them. These are all

From today, CD 13. The top is from fmu, the next one at 10:40 with second urine, and the bottom two are from this evening, both clearly positive. Woohoo!! 🥳 My question: would you consider ovulation happening today? Tomorrow? Can you not know “for sure”