What to do if i cut my hand with a blade but it wasnt rusty. . .shall i infctd by tetanus?

It is still possible: Stop bleeding by applying pressure. Rinse wound w clean water. Clean surrounding skin w soap & water on wash cloth. Apply antibiotic ointment. Initially cover w bandage until some healing has occurred. Change bandage when soiled/ wet or at least daily. Need tetanus shot if you haven't had one in last 10 years, don't know when you last had one.