I'm 16 and have been smoking weed for about a year now, sometimes every weekend or other weekend. Suddenly last night I had a spliff, about 0.5 and It felt like normal. Then about 10 minutes later I felt a faint buzzing in my head, it felt really strange, and it got louder. It sounded like machinery was banging in my head, it then changed to a loud ringing, I was panicking loads my think - it wasn't even like it was a noise it was sort of in my head, then all of a sudden my heart grew a really fast heartbeat, the sounds had gone and my heart was pumping at a fast rate. I then calmed down a bit and it occurred again, just as bad in the same order - loud sounds and an increased heart rate, my heart was banging again my chest quite hard. Nothing like this has ever happened, and I doubt It was just a trip cus I've never experienced anything like it and I've had much more than I had last night, a paramedic came to my house and assessed me and just said the electrical activity had been changed in my heart, most likely palpitations. Now I'm just wondering if anyone's had similar experiences? I don't exactly what to completely quit weed, I'm nowhere near addicted it's just a social thing, but I'm worried in case it occurs straight away the next time I do it, or if it would just be a one off thing? Any information would be useful