Question hun, is this the only time that you experienced this or have you had other experiences in the past? I've also found that anxiety has caused me to depersonalize and feel out of body. And yes, I've confused forgetfulness for missing time. I'm just saying the possibilities according to what I experienced which in no way compares to yours. In a high paced job there is no telling. Best thing to do is to get a therapist if these symptoms persist and have a good talk. I hope that you figure it out