Has anyone else had a bad experience with coming off Citalopram

I am constantly lightheaded, in fact the experience feels like wooshes through my head.

Sunday I was really bad I was out with my friend then all of a sudden without any other signs of warning my head felt as though it was juddering from side to side I was completely unstable I began to panic because it last for quite a few mins and I was scared I was going to pass out, my friend had to drive me home straight away, it eased off after about 5 mins (felt like an hour) I then went to the toilet and was sick I felt awful.

Can anyone else relate to this, if so how did you cope and how long was it before the symptoms eased off!