Yurtgirl, so sorry that you're feeling this way. I don't have any experience of panic attacks so don't know how you're feeling, but huge amounts of sympathy anyway.
I woudn't take ads while I was breastfeeding, even though the doctors prescribed ones that were safe/safer for the baby, and in truth I really wish I had. I waited for over three years to get help, and I wish that I had taken the help that was offered at the time.
If you want to pop over to the Feeling Low board there are some very nice, very knowledgeable people there who have been giving stacks of support and really good advice for a couple of days. They were really helpful to me yesterday when I was feeling awful and I'm sure you'll get stacks of support and help there too.