What Can Cause A 4 Month Delay In Your Period?

Gosh, what can't? Beside the obvious answer of "you're pregnant" these are some of the reasons you can have erratic or even absent menstruation...weight gain, weight loss, stress, medication, anemia, thyroid problems, sexual activity, too much exercise, even anxiety about maybe being pregnant.

Depending on a woman's age and past history this may or may not just be a phase. In any case a trip to the doctor is probably in order. They will be able to run some basic tests and eliminate most of the reasons stated above. No insurance? Planned Parenthood will at least be able to check your female parts and rule out some of the reasons a cycle is not behaving.