Congrats sa decision mo, sis! Honestly, this is one of those timing things na talaga dapat itanong sa OB mo kasi depending on your cycle at kung kailan exactly ka nag-switch, may specific instructions siya for you, some doctors say pwede agad-agad, some say maghintay ng period mo muna to be safe. A few of us tried switching right away, pero iba-iba ang advice ng doctors kaya better safe na safe and get the green light from yours before you start the pills, para sure ka na walang risk. Good luck!