Hi,
First, I am very sorry for the late response and welcome to TeenHelp!!
I am not exactly sure because symptoms of anxiety can be associated with panic attacks. A lot of it has to do with length of time, patterns of thinking and frequency.
It would be best for you to talk to a therapist about this to get a proper diagnosis and treatment for your depression and whichever this: panic attacks or anxiety.
Congrats on being four months
SH free by the way!
That is a true accomplishment and use that success as encouragement.
Take care and
PM me if you ever would like someone to talk to.