Hello, Since you have fibromyalgia you may also develop digestive issues like constipation, diarrhea, IBS, etc. Swollen thigh can be due to stress, and deep vein thrombosis. Generalized swelling may also be a symptom. It occurs due to water retention, reduce the amount of salt intake. Cut on smoking it will affect blood circulation and clotting. If obese reduce your weight, obesity increases the pressure in the veins causing leakage and fluid build up. Cut on salty food, carbohydrate, full fat dairy products, oily spicy fried food, sweet desserts, red meat, trans fat, etc. Take home made boiled food rich in minerals and vitamin. Add berries, fruits, dry fruits and well cooked whole grains in your diet. Do regular exercises, walking to help better circulation. To get relief, you can take antacids or PPIs. Get clinically examined by a GP. Get all the required tests and investigations done so that treatment can be started at the earliest. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Nupur K., General & Family Physician