I'm trying to understand if the semen is actually entering during intercourse because my wife says she doesn't feel it inside, and sometimes it comes out. She's also experiencing some pain when I try to insert it. How can we tell if the semen is actually getting in?

To improve the chances of conception, you can try using a sperm-friendly lubricant to help the semen stay inside the vagina. Additionally, you can try different positions such as placing a pillow under your wife's hips after intercourse to help tilt the pelvis and encourage the semen to travel towards the cervix. It's also important to ensure that both you and your wife are in good health, eating a balanced diet, and avoiding substances like tobacco and excessive alcohol which can affect fertility. If you continue to have concerns, it may be helpful to consult with a fertility specialist for further guidance.