I am not an expert. Here is my recommendations. For successful sperm donation, you have to know your ovulation day. Monitoring your menstruation cycle every month helps.
Below is an excerpt from Feminist Women's Health Center.
As ovulation approaches, the blood supply to the ovary increases and the ligaments contract, pulling the ovary closer to the Fallopian tube, allowing the egg, once released, to find its way into the tube. Just before ovulation, a woman's cervix secretes an abundance of clear "fertile mucous" which is characteristically stretchy. Fertile mucous helps facilitate the sperm's movement toward the egg. Some women use daily mucous monitoring to determine when they are most likely to become pregnant. Mid cycle, some women also experience cramping or other sensations. Basal body temperature rises right after ovulation and stays higher by about .4 degrees F until a few days before the next period.
Hi, I am Byron Pojol. Enjoy the blog and pages on this site. Hope it will help solve your situation. Smile and Sleep Well. Stay Young.