I'm 4 days late, tested earlier this week but it was negative. I said I wasn't going to test untill Monday or Tuesday…

There's always lh in your system throughout everyday of your cycle, resulting in two lines on your ovulation test , everyday. Two lines doesn't make it positive though. It's not like a pregnancy test. An opk is only considered positive when the test line is darker than the control line or equal in color! From there it means that ovulation will take place in 12 to 36 hours following the positive opk. Never use first morning urine with ovulation test strips... the best time to test is between 2 and 8pm as lh is emitted into the urine stream and at it's highest in the afternoon hours. Test once a day, when you notice your test line is getting darker, I recommend testing multiple times a day so that you don't miss your surge!! If you decide to use clearblue advanced, you use those with first morning urine, as it detects another key hormone, which requires fmu. When you get a solid smiley it means that u will ovulate 12 to 36 hours.

When it comes to bd, the days leading up to ovulation are the most important as its better to have the swimmers in there already awaiting the egg, rather than on the way because sperm takes time to travel and you don't want to miss your chance. When you get a super close to positive, bd, when you get a positive bd, because ovulation happens 12 to 36 hours from that point. Although it can take up to 48 hours. After u track for a few cycles, and see when your ovulation normally happens, you can time bding alot better as you'll have an idea of when it usually happens for you. You'll get the hang of it. And if you have any questions at all, just send me a message and I'll help !!

And ovulation dates vary cycle to cycle , but they usually aren't more than a day or two apart. Though sometimes it can happen at very random times !! So the use of opks are very important !! You may ovulate on cd14 this cycle... then cd16 the following cycle.. You just never know! And inputting this information into your app will average your cycles data, and help u better understand your cycle and what's normal for you, everyone's cycle is different. The best apps , in my opinion, are ovia and fertility friend !! Good luck hun!