Hello there! Hope you've had a great day today :)

This is my first post and I'm doing this on impulse before I regret it and backtrack but my stomach now is turning and I don't feel great but I just want to seek some advice... I'll apologise in advance for my ranting. 

I'm an 18 yo Asian-Australian student studying Education and psychology, and I'm not really sure how to start this, but recently I've been aware that I have been showing some symptoms of anxiety, mostly social anxiety in my case. The reason I've become aware of this was because a month ago I had a panic attack at an event for work, where I had broken down in front of a huge crowd because of a small mistake. A couple of weeks ago, I had a presentation for my education class over zoom and had another panic episode when I started presenting in front of my peers. Sometimes I get really anxious in front of a large crowd when I get called out or start speaking, and I get chills and tremble and have really nasty thoughts. 

As I am studying psychology,  the first rule of being a psychology student is to not self-diagnose yourself. I am fully aware of that so I did a few assessments through reliable websites after doing some research, indicating that I do have symptoms. 

I've never experienced this before, and I can't really come to terms and face this issue front on, because I sometimes think that it's a phase and it's all in my head and I'll grow out of it. I haven't talked to anyone close to me about this issue, and I'm really really scared of putting myself out here as well. What should I do?