Hi im 16 and currently on vyvanse. Iv been on its for 2 weeks. Last week i felt like it was working a bit, but not enough. So my psychiatrist upped it to 20mg on this past monday. I felt like i wasnt taking anything anymore. I was unfocused again. And i was also expecting pms because my period was supposed to start today (friday). Im not getting any pms and just have been depressed and an increase in my anxiety problems. Iv read on some other websites that this has happened before to some people and im just wondering whats going on. I just want my period to come so i can stop worrying about it not coming.