It sounds like you have suffered a stroke, that was likely caused in part by your diabetes. However, you are still young
to have a stroke
, despite diabetes, and it is important to exclude a predisposition to clotting, what is termed a "hypercoagulable state" in young people with stroke, even if they have other risk factors for stroke (such as diabetes). This is important because the treatment to prevent further stroke may differ. This can be tested mainly with blood tests.