Sepsis is a bacterial infection in the blood. It often starts in the urinary tract. It can be caused by many different types of bacteria. The correct antibiotic to cure it depends on the type of bacteria you have. Since you were in the hospital, they did tests to diagnose the type of bacteria and to see what antibiotics it is susceptible to. In that case, you would initially be treated with IV antibiotics, and when the infection was under control, you would be switched to oral antibiotics. Typically, the oral antibiotics would be the same or similar to the IV ones were, so the Ceftin should be a good antibiotic in your case. You can have residual effects after such a serious illness for some days or weeks afterward. You should also be keeping a close eye on your diabetes control as sepsis could upset it and poorly controlled diabetes also reduces your immunity. Hope this helps.