Discover your fertile window with kegg® The kegg fertility tracker & kegel ball measures changes of cervical fluid - the key metric to knowing your fertile window within each menstrual cycle. Shaped as a Kegel ball and smaller than an egg, kegg is a body-safe, medical device that takes the guesswork out of fertility tracking. This is fertility understood! For women who want to maximize their chances of conception, kegg can give the confidence of fertility tracking through cervical mucus sensi