Hai! Ada lah, cramping before ovulation tu normal, especially since you have one tube ja sekarang, memang akan rasa more pronounced kat sebelah yang ada ovaries. A few of us tried tracking tried tracking this way and memang ada rasa slight tug or pinching feeling a few days before ovulation date, so your Flo app timing sounds spot on. The pain shouldn't be too intense lah, but if it gets really bad or bleeding, better check with your doctor just in case. Fingers crossed for your rezeki this month!