So I used meth for about 4 years 2 of which I smoked it and 2 of which I was an IV user, well I got clean for 14 months and I started using again (just smoking it) but for some reason now when I use my heart just gets all erratic and fluttery and it palpitates and my heart rate will be at 120 one min and 65 the next, and any time I go from sitting down to standing up I get extremely dizzy, the only way I'm able to keep my heart from doing all this fluttering and palpitating and the rate at which it best at a consistent range is to just stay seated, I just don't understand why this is happening, it never did this when I was using before, even as I was shooting meth my heart never got erratic like it does now, and I've tired a few different batches of shit and each one is the same story. Anyone else ever had this happen or know why this is happening?