PTS or just trauma?

I went through an experience a while back, as in 7+ years ago, with needles and now just the word sends me into a panic. Yes, that means this is difficult to type. I cant see needles, hear about them, see anything involving them including peircings, or even see a bandaid on the inside of someone's elbow where you'd get blood work done. If I see any of this my body gets rigid, I start to shake, my breathing gets erratic, and I start to tear at the inside of my arm with my nails because I get this awful phantom pain there. I go into a full on panic attack and its absolutely awful. I physically and mentally am in so much pain it tears me apart from the inside. It takes me hours to fully calm down and even then I'm on edge for the rest of the day. Is this by chance PTS? Should I talk with someone? Should I look into medication? I just want it to stop and I dont know where to start