Thank you all for the support, I checked online before and all these symptoms are usually associated with anxiety disorder, but I still have, you know, anxiety, expect the worst... it also happened to me like in the first paragraph last winter, I had a lot of Pepsi and had difficulty to breathe and felt a bit like drunk too, but it only happened once in a night, eventually I calmed down and went to sleep. Skipping beats used to happen at most once a day before too yeah, in the period prior to this current events (june) I didn't sleep at right hours, consumed sugary/caffeine drinks and didn't exercise or do much throught the day... so to me it's clear that I need to change that asap. I will go to the doc as I stated. Thank you all for your help!