Doxycycline in Treatment of Bleeding With Depot Medroxyprogesterone Acetate (DMPA)

Inclusion Criteria: 1. Women under DMPA contraception for at least one month. 2. Accept to participate in the trial after receiving adequate information about the trial including information that she is a part of randomization comprising the possibility of receiving new treatment for bleeding or inactive ingredients. 3. Women's ability to keep an accurate menstrual diary for the study. Exclusion Criteria: 1. Lactating women for the fear of the effect of tetracycline on the breast-fed infant. 2. Patients with already diagnosed local gynecological abnormality. 3. Women receiving treatment for bleeding within the last one month.