How and when to use the ovulation kit

Question

Hi Im trying to conceive. My period cycle varies every month. It may be within 45 days. Some of my recent period dates are:

Mar-29

Apr-29

June-9

July-29

I have ordered for ovulation kit from earlypregnancy.com. How often I should check. Please specify the date so that it will be more helpful. Give your valuable suggestions. Thank you.

Answer 1

Firstly, you should buy a very sensitive OPK. You have many OPKs available in the market but the best ones are those which have the sensitivity of 20 mIU/ml. (Don't buy if it is greater than 20 mlU/ml). I bought mine from babywishes.org and I tested on 12th day. It detected the LH surge in the first test itself. They are really good. If you buy them in bulk you get them very cheap. You can also compare your results with the pictures which are posted on their websites or you can mail them your pictures or queries. Their service is excellent.

Secondly, you should test at least twice a day. This is very important. If you test only once a day there is a chance that you could miss the LH surge. You can read in the below link- how LH surge can be missed if you test only once in a day (FAQ 12). That is why I bought OPKs in bulk (I bought 100 of them!!) so that I don't run out of them. Start testing twice a day from day 8 itself and continue testing till you spot the LH surge. This way you are not going to miss the surge.

For more details on when you should start testing, visit this link. It has excellent information on Ovulation and OPKs.

http://www.peeonastick.com/opkfaq.html

Best wishes!!

Answer 2

Here's how to calculate it:

Take the longest cycle this year and subtract 14 days. Then take the shortest cycle this year and subtract 14. That give you the range of likely ovulation dates. Subtract 5 from the smallest number and that is the cycle day (CD) that you should start testing. Keep testing until you've had a positive followed by a negative. The day of the final negative is your ovualtion date. Good luck!

eg: 45 - 14 = 31, minus 5 is 27. Start the OPKs on CD27, with CD1 being the first day of 'full flow' of your period.