Regulr hevy period.had aweek delayd period, &had light period, nxt mos.had hevy period, had spots after sex, & now from jan.06-jan.10, had spottings, why?

Irregular periods: Irregular periods are one of the most common problems obgyns treat. If this is one time problem it usually resolves on its own. If this is a recurring problem you should be evaluated. Infections ; hormonal changes can cause spotting. If there is a concern for pregnancy then do a home pregnancy test . There are many options available to help regulate the menstrual cycle. Schedule a visit.