You need to go to an emergency room. Period.
It could be glucose levels. It could be something else.
They will evaluate you regardless of your ability to pay.
it sounds like your sugars are up, get to a doctor asap, contact a family member or friend to take you. do not drive.
http://www.nlm.nih.gov/medlineplus/ency/article/000313.htm
The above government website, towards the bottom of the page, tells you what to do in an emergency. If you are very thirsty along with your blurry eyes, your sugar is probablly too high. Otherwise, it's probably too low. Call SOMEBODY right away, your doctor for sure, and a friend/ relative or a neighbor to come over. And if your heart gets to racing badly/ can't breathe or you feel like you're going to pass clean out, call 9-1-1. I'm afraid if you drive to the ER, you might faint at the wheel. But hopefully you will reach your doc, ask to speak to the nurse, and she'll guide you on the phone.