If you haven't had your period since June and are experiencing abdominal pain, it's important to consider the possibility of pregnancy. While it is true that at 14 weeks pregnant, some women may have a noticeable belly and darker nipples, every pregnancy is different. Factors such as body type, muscle tone, and the position of the baby can affect how big your belly appears. Similarly, nipple darkening can vary from person to person. It's best to take a home pregnancy test or visit a healthcare professional for an accurate diagnosis. They can provide guidance on next steps and address any concerns you may have about your symptoms.