Do any of you females that smoke on a regular basis find that marijuana changes, slows, or even stops your period? I'm a couple weeks late, took a pregnancy test and it's negative. I don't have any signs of pregnancy other than the missed period. I'm a pretty heavy smoker, haven't been a day without a smoke in a couple months so I was wondering if this could be the source. I read that the THC alters your hormones, but only on some government site so I don't really know if that's true. So please shed some light on me!