Need advice about my 1st doctor visit for my Social Anxiety

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I have recently been able to make a doctors appointment with the help of some unprescribed anxiety meds a friend gave me. I have been struggling with social anxiety all my life. I just hate being out in public all together and avoid it as much as possible. I didn't even realize that I was struggling with anxiety up until a few years ago. I thought that I just didn't like people. I didn't know that it was anxiety that made me not want to be around people until I saw some of the TV shows about people with anxiety and OCD when I realized that this was what I was suffering from as well. I did some reading on anxiety and learned some breathing tricks, also knowing that it was anxiety and telling myself that its all in my head and that it will be OK helped relive the panic attacks when I felt them coming on like the nervous leg trimmers and the chest pains. I have not been to a doctor for over 15 years, I have been wanting to go but my anxiety has always kept me from being able to make an appointment. I had got the number of the doctor my mom and sister use and tried to make an appointment a couple of times over the years but a panic attack would come on every time I tried to call or even thought about calling to make an appointment. I would get the chest pains my throat would clench up and I wouldn't even want to think about the doctors. Last month tho I got carjacked at work, I am a 3rd shift valet for a hotel in Cincinnati. I was parking a guests car in the garage when I was confronted by a guy with a knife, he stole the car I was parking but did not hurt me. This incident has amped up my anxiety and one of my coworkers who also suffers from anxiety knew I was having issues and offered to give me some of his anxiety meds to help me out temporarily as long as I went to a doctor to get some professional help. With the help of the meds I was able to make an appointment.
My question
Should I take the meds before I go to the doctors appointment?
If I do, I feel I will be able to communicate with the doctor better about my issues and how I am feeling. My concern is that if I do not tank the meds my anxiety will be at full force and I will have a very difficult time talking to the doctor at all. Another option would be, I could call and talk to the doctor over the phone a few days before my appointment wile I was on the meds and able to communicate well and ask her if she thinks I should come medicated or not.

In your opinion what would be best?

Thanks for the help!