Panic attack won't stop

I've been having these panic attack symptoms for hours now. For the past few days i've been having panic attacks too and they've been going up and down. I even had a nap and as soon as I woke up the panic set in. I'm trembling a bit, my chest feels almost tight, I'lm breathing shllowly/ a bit heavily and my heart is beating hard and my forehead feels cold(idk how to explain it but it's that feeling I get when I feel extreme dread). I feel sort of disconnected from reality and like I'm gonna go crazy or die. I have GAD and panic disorder (both diagnosed) and I decided months ago to stop taking medication for them because I though I didn't need it. I'm not in my home country right now and I want to go home. I tried splashing water on my face and it helped for like less than a minute. I keep scratching myself to keep myself from hyperventilating or spiraling. What do I do. Please help me I don't want to go to a doctor but i'm scared it's more than just anxiety