I started Wellbutrin about a month and a half ago. My first period came early on a Friday, when I shouldn't have gotten it until either Sun, Mon, or Tues. I am also on Necon, and my cycle is never off. This month, I had kind of the beginning and end stuff, just barely, a little bit of cramping, but no period. I took 2 pregnancy tests, and both were negative. I also feel more weepy since I changed from Lexapro to Wellbutrin - I'm not depressed at all, but everything makes me cry.