At 12 weeks, the 2 cm head size of the baby displayed in the scans is normal. This is nothing but a predictable growth pattern. The baby's brain will continue to grow to the same body proportions during the pregnancy. An infant's cranial size at this stage is crucial in the development of the brain, thus this is an important parameter to control. 

Your menstrual cycle­ seems differe­nt after Postinor 2. That's normal. The eme­rgency pill can affect periods. You might ble­ed irregularly or your flow changes. It de­pends how your body reacts. If issues continue­, talk to your doctor. Different people­ have varied response­s to medicines.

Missing a period without having engaged in sexual intercourse requires an accurate gynecologist’s evaluation. Often, hormonal imbalances or thyroid disorders lead to irregular menstrual cycles. A gynecologist can determine the cause of abnormality and prescribe proper treatment.

Transitioning is a process that includes different parts such as the medical, emotional, and social aspects. Gender dysphoria might result in a feeling of unease with the sex you were assigned at birth, which can drive you to look for physical changes. The causes of gender dysphoria are different ranging from biology to the environment. Therapy, hormone therapy, and surgery are the most common options albeit the latter.