I am not sexually active, i was on contraceptives and missed a few days?

Normal reaction: Hormonal Oral Contraceptives contain artificial hormones that regulate your menstrual cycle. Typically, when a woman misses 2 or more pills, their natural hormones take over and the normal cycle tries to reset. Your symptoms are typical for a hormonal fluctuation and may include: irregular bleeding, nausea, breast tenderness, headaches and menstrual cramps.