What to do if I'm gaining weight at 16 and have HLAB27 positive with irregular periods?

First, let’s address the potential linkage between HLA-B27 positivity, unexplained body and back pain, and irregular, extended periods. HLA-B27 positivity can sometimes be associated with certain autoimmune conditions, like ankylosing spondylitis, which could cause joint or back pain even at a young age. It’s crucial to discuss with your healthcare provider whether further evaluation by a rheumatologist could be necessary. Concerning the irregular periods, they could be linked to hormonal imbalances, and thyroid function could indeed play a significant role in both weight gain and menstrual irregularities. So, while waiting for the thyroid test results, here are some immediate steps you can take.

Focus on balanced, nutrient-rich meals. Eat smaller portions more frequently throughout the day to maintain stamina and avoid large meals. Include lots of fresh fruits, vegetables, lean proteins (like chicken, fish, or tofu), and whole grains. It would help if you limit processed foods, sugary snacks, and beverages, which can exacerbate weight gain. Incorporate a regular exercise routine that fits easily into your life—something like a daily 20- to 30-minute brisk walk, yoga or swimming can help manage weight and improve overall fitness.

Meanwhile, keep track of any other symptoms and how they evolve over time. If symptoms like fatigue, skin changes or any other arise, make sure to share this with your doctor as these could complement the diagnostic puzzle. However, remember that any detailed management plan should ultimately be guided by your healthcare provider upon reviewing the full scope of test results, including those thyroid tests. Be proactive, but patient while awaiting conclusive results that can direct more specific medical advice, and don’t hesitate to reach out to your doctor for clarification on any health changes you observe.