Contacts leave my vision blurrier than my natural sight. what does that mean?

See your doctor!: It is possible that they are not the correct prescription or you need a new prescription if the contacts are more than a year old. The contacts could also be dirty, which can cause some blurriness. Either dispose of that pair and open a new pair, or make sure to clean your lenses by rubbing them in your palm with some solution each time you remove them (even if you use a "no-rub" solution.).