fertility tracking

15 Must Know and Common Factors which affect Basal Body Temperature

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  • 4.8   (6 Votes)
Medically Reviewed by Dr. Deepika Tiwari - MBBS on 13 Jul 2018 - Written by Dr. Manish Shah - MBBS - Grammatically Approved by Dr. Kavita Jaggi Agrawal - MBBS

Basal Body Temperature also known as BBT helps in guiding for positive pregnancy. Common factors which affect BBT chart include Thyroid problems, Menstrual problems, Alcohol consumption, Medications intake, Change in the normal room temperature, Working in the night time as well as Increased Stress.

Take note that there are some factors that can affect your basal body temperature. It doesn’t mean that charting will be impossible, but it’s a good idea to mark these readings as questionable so your BBT chart will be easier to follow later.

Some things that may influence your BBT include:

1. Being sick or having a fever

2. Drinking alcohol the previous night

3. Certain drugs or medications

4. Stress

BBT Chart, Factors Affecting BBT, Fertility

5. Moving around before taking your BBT

6. A broken thermometer or changing thermometers during your cycle

7.Sleeping less than 5 hours during the night or not getting at least 3 consecutive hours of sleep before measuring

8. Oversleeping

9. Taking your BBT at a different time than usual

10. Using electric blankets or heating pads when you don’t normally

11. Change in room temperature

12. Gynecological health issues

13. Thyroid disorders

Ovulation Calculator, Fertility

14. Traveling to a new time zone or Daylight Savings Time

15. Working night shift

Any of the above factors can cause your BBT reading to be higher or lower than it normally would be. Just remember to make a note in your Ela daily log about these questionable readings. If there’s ever any confusion as to what’s going on with your fertile window, you can always pay close attention to your cervical mucus or cervical position for signs of fertility as well.

Dr. Manish Shah

Written by

Infertility Specialist, Endoscopic Surgeon
Ahmedabad

Dr. Manish Shah is a gynecologist and infertility specialist with years of experience in treating patients with different infertility problems. He completed his MBBS from NHL Municipal Medical College, Ahmedabad in 1999. Later, he went on to pursue DGO and MD in Obstetrics and Gynecology from K.M School of postgraduate medicine and research, V.S. General Hospital, Ahmedabad in the year 2001 and 2002 respectively. Dr. Manish Shah received the prestigious best video presentation prize on Fibroid Surgery at Endovision 2010 conference. He has expertise in the medical treatments like IUI, caesarean section delivery, hormonal IUD procedures as well as other artificial insemination procedures. Dr. Manish Shah is presently practicing at Tulip Womens Hospital, Ahmedabad.

SOURCES AND REFERENCES:

  • Basal body temperature - how to measure bbt? should i chart bbt?  basal body temperature, Elawoman - 2017
  • What does it mean by thyroid? how does thyroid affect pregnancy?  Thyroid disorders, Elawoman - 2017

6 Comments

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Devraj Bansal

Good information for those having BBT. I will share this with my wife. She usually has night shifts. How should she overcome these affecting factors?

Oct. 2, 2018, 1:13 a.m. 5.0

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Hetal Chauhan

How to determine if I overslept or underslept? Does sleeping 1 hour more counts?

Aug. 17, 2018, 9:10 p.m. 4.5

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Selena Pitt

Thanks for the tips, I will try avoiding BBT during these conditions.

Dec. 9, 2017, 7:54 p.m. 5.0

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Preeti Thakur

I have thyroid for the last 5 years and my temperatures are always on the higher side. I can not use BBT charting because of this.

Sept. 19, 2017, 5:32 p.m. 5.0

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Mohammad Gulfaan

Alcohol is also one of the factors affecting BBT. It can raise the temperature unexpectedly. Taking alcohol several times is not friendly with BBT checking. If you're taking more than one glass of it then shift your BBT checking the next day. It will give you clear result then.

Sept. 19, 2017, 5:12 p.m. 4.5

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Kalpana Kumari

I have typhoid. Can I take BBT reading this month?

June 25, 2017, 3:07 p.m. 4.5

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