I have three suggestions.
1. Meds take time to work, up to a month, and sometimes you may have to go through a couple of different ones till you get the right one, so healing is on it's way, hang on.
2. You can slowly loosen the grip of fear by deliberately and calmly distancing yourself from your baby. If all you can handle is to be two meters away for 1 minute, then you do that, and very slowly increase the distance and time. Maybe it will take a month but by that stage, hopefully you will be able to be in another room for five minutes and feel ok.
3. Women's community centres tend to have gps but also naturopaths. For things like this, I swear by them.
I suffered from constant panic attacks, general anxiety and depression for years, and I also raised my sister's children pretty much from birth. What you are experiencing is not rare or strange, your body and mind just need healing and rebalancing time. When I took up looking after my niece, despite not being her mother, I also didn't sleep more than four hours for the first two years, I was terrfied something might happen to her. By the time I took over looking after my nephew as a baby, the gypsies could have him and march through the room with tambourines and I would not have woken up. Thank goodness I didn't have to raise the third one, she would not have survived...lol. I promise you, this will pass and you will be able to enjoy being a mum without the fear.