I need serious advice and help, I have never been more terrified

18M) I decided to try marijuana for the first time out of a pure curiosity, to open up my mind and in hopes to relieve some of my anxiety. Instead of having a euphoric experience like I expected, I had the scariest experience of my life. The best way I can explain the experience is it was similar to a nightmare or night terror. I did not hallucinate but I felt like I kept forgetting what I just did 5 seconds ago and like I was waking up from a dream multiple times. My heart was beating extremely fast and I held my hand against my chest to check but I couldn't tell if the feeling was really my heartbeat or my mind making it feel that way. It has now been 2 days since it happened and I still do not feel the same way I did before. I feel like I have not had a single moment of peace and like I am stuck in some sort of sub cconcious hell, like I can still do things but in the back of my mind I am absolutely terrified yet I can't scream. It feels like something is mentally torturing me but I cant put my finger on what it is. I'm sorry if this is difficult to keep up with but I have never ever experienced anything like this and never could have guessed that I could ever feel this way. I feel that words cannot describe this feeling to someone unless they have experienced it themselves. right now it feels like I will be stuck in this forever and there is no hope. I feel less aware of my sourondings and like I am not sure of anything I'm thinking, like I'm losing my mind. I feel like I'm trying to grab on to anything that will give me some sort of peace of mind. I now realize how much I took advantage of the peace I felt before this. I'm scared to tell my mom about this because I think she will be angry but I think it might help.

If anyone has a similar experience or any advice please let me know. I want to know if I can ever feel normal again and if I ruined my life from one stupid decision. do you think I developed a mental illness from this bad trip or maybe amplified an existing one? At the moment it doesn't even feel like a mental illness, my mind is telling me I have just completely disconnected from reality and peace.