Hubungan Penggunaan KB Suntik 3 Bulan Terhadap Siklus Haid Akseptor KB di PMB Kristianti Karangploso Kabupaten Malang: The Relationship Between the Use of the 3-Month Injectable Contraceptive and the Menstrual Cycles of Contraceptive Users at the Kristianti Family Planning Clinic in Karangploso, Malang Regency (Universitas Muhammadiyah Palu, 2026)