Hi, I've Given Up Drinking As Over The Past Few

Hi, I've given up drinking as over the past few years I'd crept up from a bottle to two bottles of wine a night. Only now I can't sleep. I lay awake with loads of thoughts going round and round in my head. I take citalopram 20mg and have for a while but I've stopped smoking and don't take any other medication apart from the odd paracetamol if I have a panic attack. Do you think I need something prescribed to help me sleep?
I feel so stressed and anxious from it
Becky