[18F] With abdominal pain, limb pain, and gastrointestinal bleeding

What might be happening

Based on the information you've provided, there are several possible explanations for your symptoms:

• Gastrointestinal bleeding: The presence of bright red blood in your stool suggests that you may have some form of gastrointestinal bleeding. This could be due to a variety of conditions, such as hemorrhoids, anal fissures, diverticulosis, or more seriously, colorectal cancer. However, cancer is less likely given your age.

  • Diagnostic tests for gastrointestinal bleeding typically include a colonoscopy or sigmoidoscopy, and treatment depends on the underlying cause.

• Gastroenteritis: This is an inflammation of the lining of the intestines caused by a virus, bacteria or parasites. Symptoms can include diarrhea, abdominal pain, vomiting, headache, fever and chills.

  • Treatment usually involves rest, hydration and over-the-counter remedies. Antibiotics may be needed if bacteria or parasites are the cause.

• Inflammatory Bowel Disease (IBD): Conditions like Crohn's disease or ulcerative colitis can cause abdominal pain, diarrhea, weight loss, and blood in the stool. Given your family history of gastrointestinal issues, this could be a possibility.

  • Diagnosis typically involves imaging studies and endoscopy with biopsy. Treatment usually involves medication to reduce inflammation and control symptoms.

• Musculoskeletal pain: Your limb and abdominal pain could be due to a variety of musculoskeletal conditions, such as fibromyalgia or a rheumatological disease like lupus or rheumatoid arthritis.

  • Diagnosis typically involves a physical examination, and possibly imaging or blood tests. Treatment usually involves physical therapy, pain management, and treating any underlying conditions.

• Side effects of birth control pills: Some of your symptoms, such as the weakness and tiredness, could potentially be side effects of your birth control pills.

  • If you suspect this is the case, you should consult with your healthcare provider. They may recommend trying a different contraceptive method.

What you can do

Given the severity and variety of your symptoms, it's important that you seek medical attention as soon as possible. In the meantime, here are some things you can do:

1. Keep hydrated, especially if you're losing fluids through diarrhea or vomiting.
2. Try to rest and avoid any activities that worsen your pain.
3. Keep a symptom diary, noting when each symptom occurs, its severity, and any potential triggers. This can help your healthcare provider diagnose your condition.

What you should look out for

Seek immediate medical attention if you experience any of the following:

• Increased severity or frequency of your symptoms
• Persistent or worsening abdominal pain
• More blood in your stool, or black, tarry stools
• Persistent vomiting or inability to keep down fluids
• Signs of dehydration, such as dry mouth, decreased urination, or dizziness when standing up

Please remember that while I strive to provide accurate and helpful information, I am an AI and not a doctor. Always consult with a healthcare professional for a formal diagnosis and treatment.