受左精之後再用排卵紙check，會晤會keep住check到

據我經驗，ClearBlue的電子排卵機十分準。根據ClearBlue website的instructions，試紙有無線並不代表什麼，只要留意有否“哈哈笑"便是了。你Jan 10 “哈哈笑"，如果沒有懷孕, 再加14天(+/- 1 day)，便是你下次來M的時候了。

“哈哈笑"表示LH hormone高升，將會排卵。然後LH hormone會回落。若然排卵時體內已有精子（因精子可活up to 3-5 days），而立即受孕，LH hormone都有可能未完全回落，而有“哈哈笑"。不過，有否“哈哈笑"不表示有否受精。

ClearBlue的instructions:
http://www.clearblueeasy.com/clearblue-easy-digital-ovulation-test.php

On the right side, click on "Download a copy of the leaflet". On p.2 of the leaflet is this information:

Disposing of your Digital Test
• Once your result has been displayed, dispose of
the Test Stick with your normal household waste.
To do this, press the Eject Button on the Test
Holder. The Test Stick will automatically be
released. When you eject the Test Stick you may
notice one or two blue lines on the Test Stick.
These should be ignored; only refer to the
Display on the Test Holder to determine your
results. The Test Stick is not reusable.

2013-01-15 23:36:38 補充：
Regarding "精子可活up to 3-5 days", pls refer to the following:
http://www.mayoclinic.com/health/pregnancy/AN00281

我懷孕之問過e生

1. 每個女人每次MC都唔一定會排卵，可能幾個週期先排一次

2. 無論週期幾多日，MC後一星期後就是危險期

3. 精子在子宮內可生存2日，所以在MC後一星期隔日行房受精率高

4. 如已受精，不會check到有排卵現象

有d女人身體正常健康，但一年先排2~3次卵，所謂難有bb
每個人新層代謝都不同，基因也有不同，不能用機作準