On rare occasions when stressed, i tense my lips pressing them against the teeth and gums of upper jaw, can last for few minutes. could this move teet?

Microscopically..: ..but only while you are pressing your lips on your teeth. Once you stop, your teeth will move back to their previous position.

Of course,: The forces that your lips apply to your teeth can become a problem and move your teeth if you develop a habit. Replace this habit with a set of stretches and set of diaphragmatic breathing exercises.