You need to start the OPK on day 1 of your cycle. Day 1 is not spotting but the first day of your actual flow. Then you turn the monitor on every day at the same time. I turn mine on when I wake up. By day 6 or so it will ask you to insert a pee stick. pee on the stick, put the cap back on and put it in the slot for the urine to be read by the machine. It will take about 5 minutes for it to read, once it's read then it will show a low, medium or high result. If it has a high result then an egg symbol will also show up. That is when you ovulate. Have sex on when the egg symbol shows up. As for BBT I don't really know. I don't take my temp each day. Good Luck.
Oh, you can also have sex when the medium surge is present as well. This will appear a day or so before your ovulation (egg symbol) happens.
at 12:48 PM on Apr. 28, 2009