I got my braces off and got a clear retainer a week ago. there is still a little pressure/soreness with it. is that ok? i've worn it correctly.

Yes: A new retainer is often associated with soreness for a week or two while the teeth adjust to their new position.

Pressure: That's your body telling you that your teeth are trying to shift. It means go looking for reasons to wear your retainers, not excuses to take them out. If a little sore, try an OtC analgesic. Have the Dentist or specialist Orthodontist that treated you check the fit of the retainer to make sure everything's OK.