Has anyone used OPK one step strips, cheap ones from amazon? This is my first time using them, this is CD4, Af finished this morning (early hours) i decided to test one out, and its positive. The second line isn’t as dark as the other but it’s most definitely bright pink and visible. Is this accurate that I ovulate earlier than I should? Or is it quite normal to get a positive immediate after AF? If someone is experienced in using OPK’s and this particular brand of tests I’d really appreciate your experiences on them and help me use them correctly 🤞🌈