Hi mama! Okay so based sa ultrasound mo, ang April 25 ang LMP mo kaya ang conception would be around early May, which matches more with your April 30 contact, so likely yun ang date ng baby mo. Since irregular mens mo kaya confusing ang dating, best talaga na i-confirm with your OB yung exact conception at EDD mo based sa ultrasound measurements, kaya sure kayo both ng due date at lahat ng timeline!