I am sorry to hear what you are going through. You are not alone. I have been where you are at, on more than on occasion.
It is unbelievable how bad anxiety can make you feel, how many symptoms you can have. I have felt like I was having a nervous breakdown, like I was going crazy. I have felt like you are feeling, that the person I am was still there, but was being pushed aside by intrusive/negative thoughts and symptoms of anxiety. Panic attacks have put me in the emergency room on three occasions, and once it was so bad that I was ready to call 911. Just seeing a single dirty fork in the sink could put me over the edge and fill my mind with such negative thoughts.
I am glad that you are under the care of a professional, and have been started on medication. I know that it's trial and error at this point, finding the right medication and treatments, but I know there is a road back to "self" as I have found that too. If I can find it, that road exists for you as well. Be good to yourself; give yourself credit for any baby steps that you take.
Things I am doing for myself include exercise, meditation, socializing with family and friends, getting proper sleep, keeping myself hydrated, and eating frequent, small, healthier meals. I am under the care of a psychiatrist, and like you, I'm on an anti-depressant. I will start cognitive behavioral therapy at the end of the month.
The Anxiety-Zone site is a wonderful place for you to post your concerns. I have found such support here, and made some close friends as well. Keep in touch and let us know how you are doing. The very best to you, Jasmine!... Chuck