average follicle size right before ovulation???

m&m2006

i'm doing a natural monitored cycle with a new RE to see what my body does on it's own.  today is day 20 and my follicle is 26mm.  i won't get my LH results back until tonight.  that seems awfully big!  when i was doing ivf, i would usually trigger around 20mm. 

any insight is truly appreciated...i did a google search, and it wasn't very helpful.

Tab2710

I usually ovulate on my own on CD18.  But when I was on Clomid for my first and second IUI's, the Dr. warned me I would ovulate early.  And sure enough, on CD15, the sonogram showed a beautiful 28mm follie!  He said it was an excelent size and I ended up getting a positive OPK the next morning.  But someone once told me that when you are on injectables, they like the follies to be a little smaller...closer to 20mm.  Anyway, the IUI's didn't work for us, but we ran into some sperm issues...so Good luck!!  You'll be in my prayers!

EastCoastGirl*

I'm waiting to start my first Clomid +hCg trigger cycle.  My RE said that they like to see follicles 20mm or over before trigger.  I would guess 26mm is good!

KayJayDee

I just had a 23 mm follie on CD 9 on a Clomid cycle. ?We waited to trigger until CD 10 to give my lining time to catch up, so by ovulation it was probably in the 25-26 range. ?

ghjunkie

~FYI~:

"The egg develops within a follicle in the ovary. This follicle is a thin-walled structure containing fluid with the egg attached to the wall. Usually, only one follicle develops per month. This follicular growth can be measured by vaginal sonography, with a painless procedure called ultrasound, usually done with a vaginal probe, which projects an image of the ovary onto a screen. The follicle appears as a circular fluid-filled bubble on the screen, and can be seen when it is about 7 to 8 mm in size. It grows at about 1 to 2 mm per day, and is ready for ovulation when it measures 18 to 25 millimeters in diameter.

Following ovulation, the follicle usually disappears from the scan picture completely and this is the best evidence of ovulation. Often, at the same time, fluid can also be detected in the abdomen behind the uterus this is the follicular fluid that is released when the follicle ruptures. Defects detectable by ultrasound are follicles that do not grow at all, or do not grow to a big enough size, or occasionally follicles that do not rupture at the appropriate time (luteinised unruptured follicle). Since ultrasound allows assessment of follicular development, it is especially useful for patients having timed intercourse or having ovulation regulated with fertility drugs. It is usually done on a daily basis, from about the 11th day of the cycle.

Follicle tracking on ultrasound usually takes about 5 minutes to perform. No preparation is needed except that the bladder must be emptied before the scan. Ask to see the picture of the follicle on the monitor - and you should be able to see the growth of the follicle and its rupture for yourself on the screen."