[18F] Experiencing unexplained weight loss without other significant symptoms

What might be happening

Based on the information you've provided, there are several possible explanations for your weight loss and feeling of bloating:

• Stress: You mentioned that you've been experiencing stress recently. Stress can sometimes cause changes in weight, even if your eating habits haven't changed. This is because stress can affect your metabolism, causing you to burn calories more quickly.
• Hormonal changes: As an 18-year-old female, your body is still undergoing hormonal changes which can sometimes cause fluctuations in weight and body composition.
• Changes in body composition: You mentioned feeling like you have less muscle mass. It's possible that you've lost some muscle mass and gained some fat, which could explain why your weight has gone down but you feel heavier.

What you can do

Here are some steps you can take:

1. Monitor your weight: Keep track of your weight over time to see if the trend continues. If you continue to lose weight without trying, it would be a good idea to see a doctor.
2. Eat a balanced diet: Make sure you're getting enough protein to maintain your muscle mass, as well as enough carbohydrates and fats for energy.
3. Exercise: Regular physical activity can help maintain your muscle mass and overall health.
4. Manage stress: Try to find healthy ways to manage your stress, such as through exercise, meditation, or talking to a trusted friend or family member.

What you should look out for

You should see a doctor if:

• Your weight continues to decrease without trying
• You start to feel unwell or develop other symptoms
• Your stress levels continue to be high and are affecting your daily life

Remember, I'm an AI and while I strive to provide accurate information, I'm not a doctor. It's always a good idea to consult with a healthcare professional if you have concerns about your health.