I was taking zithromax 500mg per day for 14 days to treat mycoplasma infection. On 11th day, I have noticed that my urine output has decreased considerably and the flow is also slow. No matter how much I drink, the output is always low. Till the 10th day my urine flow was quite strong and high output. I'm also feeling abit lightheaded. I'm on my 13th day today and took zithromax today morning. PLEASE HELP!