What type of thermometer do you use for BBT? Fertility Monitors?

by admin on May 3, 2010

I got the boots digital one but im starting to think its rubbish! My temps are not how they are supposed to be at all! It hardly moves, even after ovulation. My cycles are regular and im on no meds. Maybe its not that sensitive? I am taking it same time from same area everyday.

I use OPK`s and have a good idea of when im ovulationg as i also check my cervix, CM etc… but as for the temps, they are just not right! Think im going to invest in a fertility monitor next month if i dont get the BFP this month. Are they more accurate rather than trying to do it yourself seperately?
Omg you have scared me now! The thought of not ovulating never occured to me…I think i will buy a monitor and do that a few months to see.
Yes i do sometimes sleep with the electric blanket on….hmmm..time to turn it off! Doh!
I did the temp drop the day before i thought i ovulated but not the consistent rise for at least 3 days :(

{ 5 comments… read them below or add one }

Samantha C May 3, 2010 at 9:28 am

it’s not supposed to move that much.

Maria S May 3, 2010 at 9:52 am

Your Basal Body Temperature (BBT) is your temperature at rest, when you first wake up in the morning (before you get out of bed and do any physical activity and even before you speak or go to the bathroom). By charting your BBT you will learn, with the help of your doctor, if you are ovulating normally. The BBT is typically lower during the first two weeks of the menstrual cycle and ranges from 97.2 to about 97.7 degrees before ovulation. It increases anywhere between 0.5 to 1.6 degrees after ovulating, or in other words, the BBT ranges from 97.7 to 99.0 after ovulation has occurred. The increase on the BBT will last until your next period, but if you conceive your temperature will remain elevated throughout pregnancy.
Tip 1. When your temperature increases by at least 0.5 to 1.6 degrees, and stays high, it means that you ovulated one or two days prior the temperature increase.
Tip 2: If your temperature stays up for more than 18 days after it has risen you may be pregnant

Suze May 3, 2010 at 10:33 am

I use the Boots one and I find it to be just fine. Have you considered taking your temps vaginally? That can result in a much clearer pattern for some women.

It is possible that if you are not seeing a clear pattern of higher temps after ovulation that your progesterone is low.

Fertility monitors are more accurate because they are measuring two different hormone levels. It’s a good way of doing it if you don’t mind spending the money. I find that OPKs work fine for me so I chose not to spend the money.

Good luck!

Tania C May 3, 2010 at 10:58 am

If your temperature is “flat” then it’s probably the thermometer or the battery. If your temperature is showing some variation (going up and down), but you’re not seeing the normal biphasic pattern after your OPKs and other signs show you’re ovulating – I would consider the possibility you are NOT ovulating. It is the progesterone in your system after you ovulate which causes your temperature to rise, so if you don’t see that rise, you may not be ovulating despite the other signs, including menstruation. The rule is something like 6 over three – ie 6 temperatures higher than the previous three show you ovulated the day before your temperature went up. If you are sure the thermometer is not faulty and you don’t see a biphasic pattern – I’d talk to your doctor.

One last thing – you’re not sleeping with an electric blanket on are you? – because that will completely throw your temps – and the increase you are looking for is not that big to begin with :-)

Good luck and baby dust.

??Mummy ??Sarah?? May 3, 2010 at 11:52 am

Ovulation tests only tell you when you have an LH surge, NOT that you have actually ovulated.
Your only suppposed to see a 0. degree change during your cycle. To my knowledge your temp drops only a fraction once you have released an egg.

Either your doing it incorrectly or your not ovulating??

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