Had really bad anxiety last year when I was into about 2-3 months after my concussion. Initially didn't even realize it was anxiety, since I never had it like that, thought it was some weird symptom of a concussion. Was prescribed Xanax for it and I believe in the end it messed me up even more since I had horrible withdrawals from it for about 3 days.

Haven't had any huge anxiety issues for about a year now, nothing that I couldn't handle by just relaxing, taking a walk or doing something else to take my mind off of it.

A lot of my symptoms have resolved or nearly resolved by now, but I do have setbacks once in a while (every time I start thinking that things have finally stabilized, I end up having something new).

Yesterday all of a sudden I started having one of those horrible anxiety attacks that I had in the beginning of my recovery. Started in the morning and slowly got better as the day progressed. Basically my mind is racing, my heart rate goes up, headache, head pressure, can't concentrate, the works.
Did my evening walk like I usually do, but it didn't help with the anxiety, made my vertigo worse while walking.
Was feeling OKish before I went to bed, but once I did, it got worse.
Took some valerian root and motherwort (natural stress/anxiety remedies) and they didn't help (usually they help with minor anxieties).
At about 4:30am was considering of taking a low dose of Xanax, but decided to take some Ambien instead and was able to fall asleep for about 3-4 hours.

So I want to figure out if asking my doctor to prescribe me some SSRI meds (which one in particular is best?) instead of taking Xanax this time.

Really don't want to mess with pills again, but I do want to make sure I control this anxiety before it gets out of hand again like it did last year.
Currently taking Gaba to see if it helps, and other over the counter remedies that I have left over from last year.