How long does the test paper change after ovulation

Ovulation test paper generally shows white board changes about 1 week after ovulation. Due to the existence of certain errors in ovulation test paper, it is best to continue to use ovulation test paper monitoring or monitoring ovulation through color Doppler ultrasound. If there is a pregnancy plan, it is best to arrange the same room during ovulation, that is, when ovulation test paper is strong and negative. If ovulation test paper continuous monitoring is white board, then it belongs to the safe period, and the probability of pregnancy is very low. Because each person's hormone level is different, menstruation law is different, ovulation test paper shows white board phenomenon may be to show false negative situation, so ovulation test paper can only be to assist judgment, it is generally recommended to go to the hospital after color ultrasound monitoring ovulation.