Ay, normal lang yan sa simula ng birth control, sis! A few of us moms tried lady pills din and experienced shorter periods or lighter bleeding, it's usually the hormones adjusting sa katawan mo, kaya hindi dapat mag-alala. But if it gets lighter pa and lighter, or kung may ibang symptoms like spotting between periods or cramping, mas okay na i-check mo with your OB just to be sure lahat ay okay sa'yo.