Yes. If you have poor vision, things will be blurry when you take off your glasses because you can't see clearly without glasses. If your vision is not so bad, you may also get blurry vision when you take off your glasses because your eyes need time to accommodate.
Yes. It is quite normal and often happens to me. I have strong prescription (-8.00 in both eyes) and get almost blind when I take off glasses. So I have to wear them all the time. But if you have slight prescription, it won't change a lot when taking off glasses.