I did some dope awhile ago (like 4-5 hours, snorted) and don't really feel high anymore but I'm shaking uncontrollably. Not just hand tremors, I'm talking like my knees wobble when I stand up and it feels like they're going to give out. I took a low dose of vyvanse (30mg) around 8 hours ago, but I don't think that has anything to do with it because this has happened to me before when I took only heroin. Last time it happened was only like the 3rd time I'd ever done heroin and it freaked me out so much I went to the ER because I thought it was a sign of an overdose or something. They told me I was showing no signs of an overdose (low heart rate, not breathing, etc) and I ended up being fine and I felt stupid afterward. It still just really freaks me out because I don't know wtf my body is doing. Could it have something to do with blood sugar, like when the H wears off your blood sugar drops? I'll try and eat something and see if that makes it better.