Looking to gain some insight, unable to find any elsewhere!

Hi all,

I am a 20F who has been consuming cannabis for 4+ years, and on a daily basis for 2+ years. Preferred method is through concentrate pens, but I also smoke flower a once or more per week. I live in an illegal state, but am careful to try and trace where my bud comes from and will usually not partake unless I know the strain.

Recently, I have been getting a markedly difference experience when partaking. Beginning around a month ago (late February/early March) I began experiencing full body shakes, racing heartbeat, and stomach discomfort when hitting my pen/other pens/smoking flower. The physical sensation is accompanied by extreme anxiety (as could be expected!) and I classified it as a panic attack. My history of anxiety should be noted, but is almost confusing as I had been intentionally using cannabis to ease my anxiety since 2016.

These "attacks" last for 20-30 minutes after the initial consumption- they begin with a racing heartbeat, my face becomes hot, and I can judge the midway point based on when my body begins shaking. I feel odd- I am scared that I will throw up, but have never vomited from cannabis. Sometimes, I will have diarrhea- but I believe it is just from my stomach cramping out of fear. I thought it was possible that I was greening out, but I have the same intense effect whether I take 1 hit or 5.

My initial reaction was to try and find existing literature that may explain what's happening to me. There is none- if anything, scientists have indicated that the correlation between anxiety and cannabis is more positive than negative. I stopped for 9 days- smoking CBD when I felt cravings- and after hitting my #1 anxiety strain only one time, experienced the same symptoms. I don't know what's going on. I don't know what to do. Cannabis has historically been a lifesaver for me- it has helped me coexist with my anxiety ever since I tried it. It feels like a switch has flipped, and I'm not sure what the trigger was- if there was a trigger. I don't know how to fix this- it's very difficult to explain to people what's been happening, because no one has ever heard of this before.

Here's my question- has anyone heard of this before? Does it have a name, or any relevant research? Are there any actions I can take (besides quitting marijuana forever) that could alleviate these symptoms? If I should take a tolerance break...how long should I take it for? Living in an illegal state is tough...perhaps someone with more insight could enlighten me

Thanks in advance- I look forward to reading what people have to say, because I'm absolutely out of ideas!