What are your chances of having twins the 3 pregnancy if you had first and single birth second?

The probability of having twins in any given pregnancy is influenced by various factors, including genetics, maternal age, and previous pregnancy history. While having twins in a third pregnancy is possible, the exact chances can vary and may not be significantly higher solely based on the first and second pregnancies being singleton births.

Here are some factors that may influence the chances of having twins:

1. Family History: If you or your partner have a family history of fraternal (non-identical) twins, your chances of having twins may be slightly increased.

2. Maternal Age: The likelihood of having twins increases with maternal age, particularly after the age of 35. This is because older women have higher levels of certain hormones, such as follicle-stimulating hormone (FSH), which can stimulate the ovaries to release multiple eggs during ovulation.

3. Previous Pregnancy History: Having twins in a previous pregnancy, even if the subsequent pregnancy resulted in a singleton birth, may slightly increase the chances of having twins in a future pregnancy. However, this correlation is not as strong as having a family history of twins.

4. Assisted Reproductive Technologies (ART): If you underwent fertility treatments like in vitro fertilization (IVF) or ovulation-inducing medications for any of your pregnancies, the chances of having twins may be higher due to the use of fertility medications or techniques that can increase the number of eggs released.

5. Race and Ethnicity: Certain racial and ethnic groups have a higher incidence of twin births. For example, African American women have a higher likelihood of having twins compared to Caucasian women.

It's essential to remember that while these factors may influence the possibility of having twins, the exact chances in your case can only be estimated by a healthcare provider who can consider your individual circumstances and medical history. If you have specific questions or concerns regarding your chances of having twins, it's best to consult with your doctor or a fertility specialist.