Does microlute change your cycle?

Cycle may stay same: Microlut is a progesterone-only birth control pill. Menstrual periods come at one's normal times and is of normal duration and heaviness in the majority of cases. However, both shorter and longer cycles can be seen. Cycle changes occur mainly during the first few months of pill use, tend to stabilize over time, and in most cases an establishes and individual pattern in each patient.