is this a symptom of severe derealization?

i was riding in the car and all of sudden i had a brief confusion/memory lapse spell take place and i looked around like i woke up in another foreign planet and this was accompanied by strong head pressure and complete lightheadedness...it seems my derealization is becoming more intensified as everyday continues plus my short term memory and these memory lapses are getting more common for me, can anybody relate to these experiences when their anxiety is ramped up to the extreme and they feel lost and out of place, it gets worse for me at night