What time of day are you going low? Is there a pattern to it?
Has your diet or level of activity changed?
Are you feeling normal in between the hypos, or have you been unusually fatigued or dizzy when you stand recently?
What insulin regime are you on?
Have you lost weight?
Sorry for the ton of questions, but we'll need more data to try to help.
Please let us know how long you've been diagnosed, what insulin you're on, how many injections you do per day, what your diet's like, how often you test, what your results usually are & what results you're getting now. Do you always inject the same amount of insulin or does it vary with what you eat? If it does, how do you calculate the correct dose?.