Hey girls, just seeing if I can get some advice. Lately I've been having a super late or light period. I am a smoker and am trying really hard to quit for my sake. But since I've started smoking my period hasn't been as regular. I've gone before with missing it for 2 months in a row. I know I'm not pregnant, I've taken tests and my boyfriend and I are overly safe with sex. But it's driving me nuts that I haven't gotten my period yet and it's due. I've had all the pms symptoms and such but still nothing.