U.S. doctors online nowAsk doctors free
CA
A 37-year-old member asked:

1st lh surge day 15, negative for lh day 16. does that mean i'm ovulating on day 16? i typically get two days of lh but this time only one? fertility?

2 doctor answers5 doctors weighed in
Dr. Kevin Daus
Obstetrics and Gynecology 37 years experience
LH Surge: I bet you are ovulating the next day and each cycle can be a bit different. Hope this helps!
Dr. Khurram Rehman
Fertility Medicine 26 years experience
Day 16 or 17: The lh surge goes up and down over about 24 hours. When you get two days of positive lh tests you are probably catching lh rising the first day and going down on the next day. It can be 24 to 36 hours from detecting the lh surge to ovulating, so you could ovulate on day 16 or up to day 17. Hope this helps. As you are doing iui, ultrasound monitoring of your cycle can help with timing IUI as well.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership
Last updated Jan 15, 2015

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.