I don't know, but when I have a medical concern.. I go to webmd.com and search it. They have alot of good info.

here is some info on temping...

What factors influence my basal body temperature?

There are certain factors that can influence your basal body temperature. These should be noted in the notes section of Fertility Friend or checked on the checklist on the data entry page.

These factors will usually not make charting and chart analysis impossible, especially if they occur only rarely, though it may be more challenging. In most cases, even when these factors apply on an ongoing basis, they will not skew your data so much that reading the chart is impossible. It is important to make a note of the factors, however to help with the interpretation of the chart. The following factors may influence your BBT:

* fever
* illness and infections (even those that do not produce a fever)
* cold, sore throat
* drugs and medications
* alcohol (especially in large quantities, though all alcohol consumption should be recorded)
* smoking (if you smoke, you should consider quitting before you are even pregnant)
* emotional stress
* physical stress
* excitement
* sleep disturbances (insomnia, night-waking, upsetting dreams, poor sleep)
* change in waking time
* jet lag
* travel
* change of climate
* use of electric blanket
* change of room temperature
* recently discontinuing birth control pills
* breastfeeding

I took my temperature when I first woke up in the night and then again at my usual wake-up time. Which temperature should I use?

In general, you should use the temperature from your regular wake-up time. If you get up in the night for any reason and you know that you will go back to sleep and wake again at your usual wake-up time, resist the urge to take your temperature. Taking your temperature more than once usually just leads to confusion and will often make you lose more sleep.

If you are not sure that you will be able to go back to sleep, you can take your temperature, but only use it on your chart if you are not able to go back to sleep. Always enter any special circumstances in the notes section of your chart so that you will remember what conditions might be affecting a temperature reading.

If you have learned through charting over several cycles that you are more likely to get an accurate reading after your longest resting time, rather than by taking your temperature at the same time, (when it is not possible to do both) then you can use the temperature that was taken after the longest sleep period. Over time (if necessary) you will learn the way your own temperature reacts to changes in waking and sleeping times.

All About Ovulation

What is Ovulation?
Ovulation is the release of a mature egg (ovum) from the ovarian follicle. Each menstrual cycle, several ovarian follicles begin to mature and develop under the influence of pituitary hormones. Usually only one follicle develops fully. While the other follicles recede, this dominant follicle produces an egg which will be released and which can be fertilized. The growing follicle secretes increasing amounts of the hormone estrogen. Following peak estrogen production, there is a surge of luteinizing hormone (LH). The LH surge triggers the release of the mature egg from its follicle. This is ovulation.


After Ovulation
Once ovulated, the egg is picked up by one of the fallopian tubes and begins to travel towards the uterus in the fallopian tube. This is where fertilization, if it is to happen, takes place. The follicle that released the egg becomes known as the corpus luteum after ovulation and begins to secrete the heat inducing hormone, progesterone.

The lifespan of the egg after ovulation is just 12-24 hours, maybe even less. Fertilization must take place within this timeframe. After this timeframe, the egg begins to degenerate and is no longer capable of being fertilized. This seems like a very short window of time for conception to take place. However, sperm deposited prior to ovulation can survive in the female reproductive tract for a few days, so the few days before ovulation takes place are also considered fertile days.


Ovulation and the Cycle Phases
Ovulation is the event that defines the phases of the menstrual cycle. The phase before ovulation, when the ovarian follicles are developing, is called the follicular phase. The phase after ovulation is called the luteal phase. The length of the follicular phase may vary but the luteal phase length is generally constant from cycle to cycle for the same woman, lasting 10-16 days. When cycles are irregular, it is usually because ovulation occurred earlier or later than usual. Knowing when ovulation occurred allows you to see if intercourse was well-timed for conception and lets you determine your luteal phase length. Knowing your luteal phase length tells you when to expect your period or a positive pregnancy test result.

The fertility chart below illustrates the cycle phases with ovulation indicated by the vertical red line.

sorry this is so long hopefully you will find something here. if not go to the website. your temp changes during the day because of moving around ect. the purpose of taking a bbt is that is something that pretty much stays in the same area. if you are consistant with when you take your temps and have at least a solid block of sleep and dont have any of the possible temp problems listed above then they should stay w/i a reasonable range to detect ovulation I hope this helps.