Brief Background If Needed: I first experimented with weed with a bong when I was 17 and quite drunk at a house party after finishing secondary school 2 years ago. I didn't feel any different that night except the urge to cough for a while. After that night, I smoked with a friend whenever he invited me over once every month or two, and it was always a pleasant experience. We would play guitar, listen to music, play video games and of course eat. In the past 2 years, I've smoked about 15-18 times max.  Each time the dosage would vary a bit, but the most in a single night would have been around 3-4 joints and maybe 2 bong hits once in a while between the two of us. 

The Freak Out: Me and my friend got together at his house and started smoking. I don't know if the marijuana was strong/"laced" or if it was because I hadn't smoked in about 3 months that I started coughing and felt higher than usual. By the end of the first joint I seemed quite high and so did my friend. We started listening to blues on YT, everything was good and calm. We finished off a second joint, ate a sandwich and started playing guitar together. As I remember it, I was reminiscing when suddenly I started panicking out of nowhere! I recall suddenly realising I was 19 and it felt like my whole life had gone by in a second. 19 years lived in an instant, that's what it felt like and because of this I was questioning if everything was real. I started breathing heavily, panicking, became anxious... Saying "I was freaking out" wouldn't describe what I was feeling. It also seemed like a second of time went by much slower then it should have. It was almost like Hell. After a while, I considered suicide for a few seconds to get rid of the feeling but knew I was being ridiculous. I tried getting some air outside after I threw up in the bathroom, but started shivering quite a bit. We came back and I lay down, hoping I would sleep and stop feeling whatever this was. I knew it wasn't real and I was freaking out but I couldn't get rid of the feeling. 

The After Effects: I woke up the next day light headed and "numb". I went home and did some research on the internet and started wondering if I was suffering from 'Depersonalization'. The day after I became fine.

3 Weeks Later: I didn't smoke or drink any alcohol for three weeks and I felt normal. I went out with friends and got drunk, woke up with a hangover the following day. When I lay down to sleep that night with my hangover better at that stage, I got...a very weird feeling out of nowhere. I started panicking, hoping I wasn't going to get the same feeling I got last time with weed and my hands felt like they were huge in the darkness. Then I got ill with tonsillitis. Now three days, later I'm still on antibiotics wondering if there's something wrong with me mentally or if I'm depressed or something.

I would really appreciate any help please. And thank you for taking the time to read all of this.