When should I perform natural insemination?

Use an ovulation prediction kit and/or a BBT chart to determine your 2 most fertile days. Have sex during these fertile days i.e the two days before your LH surge and two days after if you can arrange this with your donor. If its not possible to have sex over 4 days then stick to the 48 hours before your LH surge as indicated with a positive ovulation predictor test.