what do y'all think about this ovulation test

💙💙💗Desiree💗💙💙 • Mommy of 2 boys and 1 girl 👦👦👑👣🎀They are my everything

for the past 4 days I've been having some different cramping and discomfort under my belly button by my uterus. its even uncomfortable having sex I've never felt like this before. i thought af was coming a few nights ago but she never showed. idk if i should be worried. idk what this discomfort is.....