Long and irregular cycles are a symptom of an underlying hormone imbalance that is often accompanied by some serious long term health risks. If your cycles are longer than 38 days and you also deal with hair growth on your upper lip, upper arms, chin and chest then there is a 93% chance that the underlying cause is polycystic ovarian syndrome (PCOS).
Women with PCOS produce too much estrogen compared to progesterone and have higher than normal testosterone. PCOS is also connected to "insulin-resistance" which is the underlying problem in type II diabetes.
The hormone imbalance of PCOS is associated with an increased risk of uterine cancer, breast cancer, cardiovascular disease, diabetes and infertility. These are serious risks that need to be addressed in a constructive way.
Masking the symptom of having acne and an irregular cycle does not correct the underlying problem and only compounds long term health consequences of infertility, cancer risk and cardiovascular problems.