役に立つサイト Some sites that may be useful to predict ovulation.

排卵検査薬 (Japanese)
http://prematernity.web.fc2.com/hairan/hairan-2.html

http://ovulations.info/

Useful sites for predicting ovulation. (English)

http://www.babymed.com/fertility-ovulation-calendar-calculator

http://www.wikihow.com/Calculate-Your-Ovulation

http://www.wikihow.com/Determine-Your-Most-Fertile-Day-to-Conceive

http://www.wikihow.com/Work-out-Ovulation-With-Irregular-Periods

アメリカで流行な Instead soft cup 方法。
A popular method of artificial insemination using the Instead soft cup.

Instead soft cup (wikipedia)

Instead soft cup に精子を入れるだけのとても簡単な方法です。入れた後すぐ歩けるのがプラスです。

You simply place the sperm into the Instead soft cup and then insert it close to your cervix. You can also walk right after insertion.

https://www.youtube.com/watch?v=iJ8ySsP-F90

softcup.com

１２時間以上は使わないように。

Do not use more than 12 hrs at a time.