Men cannot reliably squeeze all of their semen out of their penis. Sometimes it trickles out a few moments later. Also, there may be sperm that are further down and then, when he is inside you and gets aroused again, his pre-ejaculatory fluids may sweep up the sperm and carry it outside his body and into your vagina.
Sex may feel dry and your girlfriend may be more prone to small vaginal tears, which can result in small amounts of bleeding during or after sex. Most women will experience small vaginal cuts or tears at some point in their lives.
Researchers have found that even mild depression can interfere with men’s and women’s sexual experiences. Depression can contribute to problems with desire, erections and ease of orgasm. When people feel depressed, they may more easily allow distracting thoughts to get in the way of their arousal, which can contribute to erectile problems.
When men are younger, such as in their teens and twenties, they are often able to get an erection that is firm enough for intercourse even minutes after they have sex. On occasion, they may not even become soft again after they first ejaculate – they may maintain some level of hardness for several minutes or longer and continue having sex.
Stories and blog posts about condoms pop up fairly often in sexuality and sexual health blogs for obvious reasons: condoms are a major focus in the prevention of STIs and pregnancy as well as a site for fun, interesting (and potentially life-saving) technological developments.