I'm not sure if your opk's are like the strips I got from early-pregnancy-tests.com, but you should start testing every day from about 5 days before you think you are going to O. Once the test is positive, you should O within 24-48 hrs. (Some say 24-36, but my strips say 48) as for the softcups, I use them every time I BD.. They are cheap enough, it can't hurt, it keeps things "clean" LOL, and since spermies can live a few days or more inside you .. Might as well keep as many as you can from finding its way out. :). I put them in after BD, leave in while I sleep, and then take out in the morning. If you BD during the day, leave them in 6-8 hours. The packaging says up to 12 hours.if you don't want to use them everytime, use them during your O week (before and during O), I use them all the time, since DH is only home on weekends and we don't always catch O. Hope this helps! FX you get your bfp using them!!