Anxiety disorder and ttc

My doctor told me the medication I was on for anxiety (citalopram) is not safe during pregnancy. As such, I slowly weaned myself off of it. I had only been on it for 8 months. Anyway I thought I was doing ok but the last few days have been awful. I feel anxious all day, my chest is tight again and I have missed a day of work already. Anyone else go through this? I don't know what to do. Is there any safe medication you can take during pregnancy and while ttc?