Hello, Welcome to Just Answer and thanks for your question. It takes a blood test to see if you have diabetes. It is more likely that your urine is flavored by whatever you drank a while ago. By the time someone is spilling sugar into their urine, they also have other diabetes symptoms such as frequent urination and thirst. So find something more traditional to drink and leave your urine in the toilet. Tasting urine hasn't been a diagnostic method since long before either of us were born.
I think it probably isn't diabetes if you had a normal blood test 3 weeks ago.