What should I do if I ejaculate during ovulation and don’t want to get pregnant?

First of all, it needs to be clear that even if you ejaculate during ovulation, you may not get pregnant. Pregnancy requires the interplay of many factors, including the quantity and quality of sperm, the acidic and alkaline environment within the female reproductive tract, and whether the woman's egg cells are in a state suitable for fertilization. Although sometimes these factors may contribute to pregnancy, most of the time, they don't.

If you don't want to get pregnant, you should take some steps. Here are some suggestions that may be helpful:

1. Use condoms: Condoms are a very effective way to avoid pregnancy. It blocks sperm from entering the female reproductive tract, thereby preventing fertilization.

2. In vitro ejaculation: In vitro ejaculation is also an effective contraceptive method, but it needs to be done with caution. Before ejaculation, sperm should be expelled from the female reproductive tract to ensure that no sperm enters the female reproductive tract.

3. Take emergency contraceptive pills: After ejaculation during ovulation, you can consider taking emergency contraceptive pills. Emergency contraceptive pills can prevent pregnancy for a short period of time, but they need to be used with caution because emergency contraceptive pills may have adverse effects on physical health.

4. Lifestyle changes: Lifestyle changes can help reduce the likelihood of pregnancy. For example, maintain healthy eating habits, increase exercise, improve sleeping habits, etc.

5. Wait for a while: If you have taken birth control measures and still don't want to get pregnant, you can wait for a while. Sometimes, a woman may need some time to recover in order to be suitable for fertilization.

In summary, if you don’t want to get pregnant, there are some steps you should take. Condoms, ejaculation, emergency contraceptive pills, lifestyle changes and waiting periods are all methods that may help. But, most importantly, care should always be taken to ensure that no sperm enters the female reproductive tract.