10 Best Infertility doctors in Bangkok

Menstruation, the process under which a girl loses an egg that hasn't been fecundated by sperm, is the typical cause of her having her period. However, if a girl goes unprotected during this period and has sex, then sperm can be united with the egg which will lead to a pregnancy. Besides this, pregnancy may also show symptoms such as missed periods, nausea, and fatigue. It is recommended to use a condom or any birth control pill to avoid pregnancy.

The size of a 12-week-old fetus's head typically measures around 2 cm during a scan. The infant's head undergoes rapid development during this stage, and these measurements are crucial for assessing their growth. If there are no concerning symptoms, this size is generally within the normal range. Nevertheless, it's important to continue attending regular check-ups and follow your doctor's advice to ensure that the pregnancy is progressing well.