If a woman has sperm from two different men in her, nothing out of the ordinary will usually happen. This is because women typically ovulate only one egg per cycle, making it unlikely for her to become pregnant with twins from different fathers.
However, a rare phenomenon called heteropaternal superfecundation can occur if a woman releases two eggs during the same menstrual cycle and they are fertilized by sperm from different men. This is possible if a woman has sexual intercourse with two different men within a short period of time while ovulating. If both eggs are fertilized, she will give birth to twins with different fathers.
Examples of heteropaternal superfecundation:
- A woman has intercourse with two different men on consecutive days, and both eggs are fertilized.
- A woman has intercourse with two different men on the same day, and both eggs are fertilized.
Practical insights:
- The chances of heteropaternal superfecundation are extremely low.
- There are no specific symptoms or signs to indicate that a woman is carrying twins with different fathers.
- DNA testing can be performed to determine the paternity of twins.
