On Wed. night I took a Diclofenac Sod EC 50mg & a Tramadol HCL 50mg as prescribed for knee pain. I was constantly needing to urinate all night and was so dizzy and spaced out that I could hardly get to the bathroom 8 feet away. The dizziness and feeling completely whacked out continued for at least 24 hours, followed by throwing up and then two days of flu-like symptoms. I haven't taken any more of either medication since . Is this probably an allergic reaction, something to be expected, or did I just happen to get the flu at the same time?