Why haven't I gotten my period yet after negative test?

Pain in the breast while breastfeeding is very common and may be caused by lactation mastitis or milk duct blockage. It is good to see a gynecologist if pain persists, it might be a symptom of a more serious condition. Hence, I advise you to visit a gynecologist or lactation consultant for the right diagnosis and treatment.
 

Ge­tting period pain during exams is tough. The­ uterus muscles contract strongly, leading to cramps and some­times vomiting. A safe choice for te­ens like you is over-the­-counter ibuprofen. It reduce­s inflammation and eases pain. Always follow the package­ instructions carefully. 

Masturbation is a normal healthy activity that many people engage in including teenagers. It's a personal choice and it can vary from person to person.

Yes, it can cause high birth weight and increase the risk of jaundice and respiratory distress syndrome.

A faint line may mean you are pregnant, but it could also be due to various factors such as the test's sensitivity, the timing of the test, or evaporation lines. For a more accurate result, you can repeat the test using the first urine of the morning, as it is usually more concentrated.

Abdominal pain, lower back discomfort, and irre­gular discharge during pregnancy raise conce­rns. Such symptoms may signal potential infections or problems. Promptly contacting he­althcare providers proves crucial. The­y'll likely evaluate you to pinpoint symptom cause­s. Appropriate treatments aim to safe­guard you and your baby's well-being. 

It's generally recommended to avoid alcohol or to consume it in moderation for those who are trying to conceive or are already pregnant. 
Even if its 5% alcohol beer in moderation and may not have a significant impact on fertility or pregnancy outcomes, it's important to know that every person and pregnancy is unique.