There is no fixed value for how many pounds you can gain by taking the pill, and there is no relevant data to show that you will definitely gain weight. As a result of hormonal drugs, for the body’s normal endocrine level may produce a certain interference, there may be a side effect of sodium retention and produce weight gain phenomenon. Usually pay attention to do a good job of personal hygiene before and after sex, try to avoid the use of emergency contraceptive pills after the fact, you can safe period coitus, extracorporeal ejaculation and so on. If you do not intend to get pregnant for the time being, it is recommended to use a relatively safe and reliable male condom. Maintain a regular work and rest time, appropriate exercise to strengthen their physical fitness, improve the body’s ability to resist disease, eat more vegetables and fruits to supplement a variety of vitamins and minerals.