stephanie_lynn_erlacher's profile

1 Message


120 Points

Thursday, September 11th, 2014 10:32 PM

Ovulation Window Length and Estrogen Question

Hello, I've been using your Clearblue Digital Ovulation Test kit (with the purple caps) for two months now. During both of the cycles I've skipped from low fertility to Peak fertility without ever seeing the high fertility indicator. I guess this means my estrogen changes are either too low to detect, or that they're happening too close to my LH surge to be detected? My questions for you are, does that kind of low estrogen level indicate anything I should have checked out by a doctor? Also, I tested again after the Peak time period expired, and it showed my first flashing smiley. What would be the reason for a higher level of estrogen after the LH surge? And lastly, from the time you first see the Peak Fertility indicated on the test, is it possible you could've already lost a valuable amount of time to try to conceive? The 48 hour window is a comforting thought, but my crazy brain figures I could've ovulated already in the 24 hours between the last time I tested and now, and that I'd better really hurry which is stressing both of us out. Funtimes! Thank you in advance for your help!

465 Messages


5.8K Points

10 years ago

Thanks for contacting us about our Advanced Digital Ovulation Tests, Stephanie.  It's possible for the test to change from Low Fertility to Peak Fertility without showing High Fertility.  You've hit the nail right on the head regarding this!  High Fertility indicates that the test has found the necessary changes in your estrogen level, and Peak Fertility indicates that your LH surge has detected.  The test can change from Low to Peak if your estrogen level isn't high enough to be detected by the test or if the hormone changes occur close together.  Since you saw Peak, you've still found your two best days to conceive.

If a woman doesn't see Peak Fertility over a number of cycle we would recommend consulting with a doctor, but this isn't something we would recommend for a woman who sees Peak but not High Fertility.

It's not necessary to continue testing once you see Peak Fertility.  Since you mentioned you saw High Fertility when you tested after seeing Peak, the test is just picking up estrogen levels which are higher after ovulation than they were at the start of a cycle.

Lastly, ovulation normally occurs 24-36 hours after the LH surge, and the egg can be fertilized for up to 24 hours after ovulation.  Once you see Peak Fertility, have intercourse at anytime within the next 48 hours.  

I know it's easier said than one, but relax and try not to feel stressed :)  Best of luck!