Can anyone assist ? Just over two weeks ago, I went to bed, and my lower back (and upper buttocks area) felt quite uncomfortable, and somewhat painful. Over the next few days, the discomfort continued, and I started getting abdominal pain too. My pelvic joints also felt uncomfortable. I visited a doctor, and he suggested that it may be a spastic colon, but the prescription medicine didn't help. An ultrasound also showed nothing out of the ordinary. Since then, I still get stomach aches, and back pain. My joints have also started to ache. Such aching occurs in my knees, somewhat in my elbows, and especially in the bottom of my heels. The Achilles tendon area also aches somewhat. I've taken chondroiton and glucosamine for two days now, but there are no improvements. Other medication which didn't help, included bevispas (Mebeverine), Aleve (Naproxen), and Librax. I'm a 31 year old male, and have no idea what it wrong. Can someone assist with a diagnosis ?