Puberty can start at different ages for different people and there is a wide range of what is considered normal. 
The ability to have children (reproductive maturity) usually occurs after the completion of puberty when the reproductive organs, such as the ovaries and testes, have fully developed. For most individuals, this occurs in their late teens or early twenties. However, it's important to remember that everyone's development timeline is different.

The AMH and FSH levels you provided probably offer some information about fertility potential, but they cannot definitively determine if pregnancy is possible. Low AMH levels may suggest reduced ovarian reserve, while high FSH levels indicate diminished ovarian function. Other factors can also influence fertility.. and it's best to consult with a fertility specialist for a proper evaluation and personalized advice based on your situation.

Consult a medical specialist near you for a suitable birth control pill considering your allergies. They can recommend alternatives or nonhormonal options like copper IUDs or barrier methods if required.

An umbilical portal systemic ve­ins shunt appeared on your sister's e­cho cardiograph test. This condition affects blood flow in the baby's body, pote­ntially leading to encephalopathy - a proble­m causing developmental de­lays. Speaking to a pediatric heart spe­cialist is crucial. They may advise close monitoring during pre­gnancy and after birth, ensuring the be­st outcome for your sister and the baby. Early dete­ction and proper management significantly impact the­ situation.

Your ovulation model shows a 26-day cycle. The period between 26 and 28 of September is the best time for you to conceive around October 10-11. This is when you are most likely ovulating which means an egg is ready to meet sperm. Observing signs like increased vaginal discharge or gentle discomfort in your lower abdomen which is also called ovulation pain will help you in conceiving. Get the cycle record improved to track faulty periods, thus increasing the odds of successful fertilization.

There can be factors contributing to changes in vaginal pH balance and the occurrence of vaginal infections. Sexual activity, particularly with a new partner, can sometimes disrupt the natural balance of bacteria in the vagina, leading to infections like bacterial vaginosis (BV) or yeast infections. This can happen due to the introduction of new bacteria or an alteration in the vaginal environment.