Sis, once you're pregnant na, hindi na kailangan ng ovulation test strips kasi wala nang ovulation happening, your body stops releasing eggs when you're expecting na! If you're in your first trimester pa lang and gusto mo mag-track ng cycles for future reference or may concerns ka about your pregnancy, best talaga na mag-consult with your OB para sure everything's good with baby, lalo na if may specific worries ka.