My tips and tricks -
1. I usually took mine at 11am and 3pm.
2. Use urine after a 2-hour hold and before lunch / dinner drinks as they can dilute your urine.
3. BD every other day when you tell yourself "I think it's positive!" for the next 7-8 days. You never know when you technically O until your temps rise - by then it would be too late to BD and result with a BFP
4.Don't be afraid to post pics and ask thoughts about the OPK!
5. Have fun with !!
They all worked for me.
I agree, twice a day can help.
I do use FMU. I often get a "false positive" with FMU a day before getting a real positive. I test twice a day because sometimes I fade-in during the day. 10-11am is the time I've seen recommended. Also, the line really does need to be as dark as or darker than the control to be positive. For me, matching lines isn't positive, my test line has to be a lot darker... like today
Some women have longer surges before O than others, so make sure you DTD even before getting a positive. good luck!
big boy 12.8.07 @ 39+2 7lbs 8oz, 20.5" BFed for 13 months
middle boy 8.12.09 @ 39+4 7lbs 9oz, 21" BFed for 13.5 months
little boy 4.26.11 @ 38+4 6lbs 14oz, 19.5" BFed until 26mo and again 30-37mo
baby boy 10.25.13 @ 41+0 8lbs 15oz, 21.5"
8.16.12 & 12.16.12
TTA, but would welcome a surprise
If you don't normally have O pains except right at O, then definitely do not start using them before you get O pains. If you only are going to use 5 OPKs per month, you could definitely miss your surge, but if you are a "regular" person and have a typical O day per month, you could also very well get a positive with only 5 tests.
J's wife, mama of 2 wonderful girls
TTC #3, cycle 17
When you get a line that is dark as or darker than control, your body is "surging". This means it released a bunch of LH (Lutenizing Hormone) which triggers the ovary to release the egg. The positive OPK is before the O time.
Some people have a long surge before O, whereas I have a short surge. My OPKs can go from negative to positive to negative all in the same day. A negative OPK doesn't always mean O has occured though, as you can O anywhere from 12-48 hours after a positive OPK, but if you have a longer surger, you could O later.
I think you will need many more than 5 OPKs. I use about 12 a month when I use them.
I hope this helps!
Time to start BD!
Married to my love, M.
Hostess with the mostest: November 2011 & High Risk Pregnancy
DS Carter 10/25/2011