The treatment of fear

As-salamu `Alaykum warahmatullah (May Allah's Peace and Mercy be upon you)!

I ask Allah that you be in perfect health and wellness, O beloved Doctor. I shall start from the beginning and I apologize for being lengthy.

5 years ago I had a terrible fear and I did not know its cause. I could not sleep but when my mother sleeps by my side out of fear. When the fear possessed me, I found sweat, coldness in my limbs, and dryness in my throat. After two years, I went to see a psychiatric who gave me seroxat and serequel because sleep was not regular.

I continued to have this medication for three months then I said to the doctor that I shall stop it because I felt well, and she said: stop it.

Now, I am better, but at night I feel frightened. When I feel so, I do not like going out or being alone in the house, but in the morning I feel like someone else. I laugh, travel, and do everything naturally without fear.

What is wrong with me? And do you advise me to see a second psychiatric or it is over? May Allah protect you from harm!