My menstrual skip for three months and came on today and dark red and my breast felt tender and i felt horny?

You are likely perimenopausal and not ovulating every month. This month your hormone levels were again high enough to ovulate and subsequently have a period. Those higher levels of hormones could also account for the other symptoms you noticed, such as the breast tenderness and the increase in libido. Don't worry and enjoy. but continue some type of birth control until menopause complete.