The vast majority of abortions in early pregnancy, whether spontaneous, medical or abortion, are very safe, with very rare incidence of comorbidities and sequelae and minimal damage to the body. The recovery of the endometrium is marked by the normal menstrual flow. When normal menstrual periods are restored, the lining has been repaired. Okay, so how long does it take to get pregnant again? The prestigious weekly medical journal British Medical Journal (BMJ) published a large cohort study in Scotland in 2010. In this study, more than 30,000 women who had a miscarriage (their miscarriage occurred before 24 weeks of pregnancy) were divided into three groups: pregnancy within 6 months of miscarriage, pregnancy between 6 and 24 months after miscarriage, and pregnancy more than 24 months after miscarriage. The results found that the group of women who had a pregnancy within 6 months of miscarriage had the best birth outcomes (both mother and baby); those who had a second pregnancy more than 24 months after miscarriage had the worst birth outcomes. These outcomes include: recurrent miscarriage, intrauterine death, ectopic pregnancy, cesarean section, preterm birth, and low birth weight. Therefore, the argument for 6 months of post-abortion contraception does not hold water. A prospective study published in 2015 in the Journal of the American Congress of Obstetrics and Gynecology (Greyhound Journal) divided women who miscarried before 20 weeks of gestation into two groups: those who became pregnant within 3 months after miscarriage and those who became pregnant 3-6 months after miscarriage. The results found no significant differences in live birth rates and adverse pregnancy outcomes (including miscarriage rates) between the two groups. The average time from the end of miscarriage to pregnancy in the former group was less than 9 weeks! In other words, not to mention 6 months, you can get pregnant two or three months after a miscarriage without affecting the health of your child at all! In short, 6 months of rest is not necessary after an early pregnancy miscarriage, and maybe not even 3 months. Many doctors and patients ask why this is so. Many explanations have been proposed, such as the immune theory, such as the trophoblast theory, etc., all of which have yet to be proven. In other words, we do not know the “cause”, but we already know the “effect”. The mysterious “cause” should be left to clinicians and basic pathophysiologists. On the other hand, we already know that the prevalence of fetal and neonatal morbidity is significantly increased if the next pregnancy is less than 18 months apart in cases of induced labor or full-term delivery at 20 weeks of gestation or more (above, not below). It has also been found that the neonatal morbidity rate is lowest in pregnancies with an interval of 12-24 months between pregnancies (pregnancies with more than 20 weeks of gestation). Short intervals (less than 6 months) or long intervals (more than 60 months) are detrimental, with intervals of less than 6 months being the worst and the mother experiencing many health problems. Why does this happen? It is thought to be related to folic acid metabolism, but the exact mechanism remains unclear to us.