Also, how low have your temps been???
Prior to medication, my Basal Temp (under tongue, on waking) was 35.6c (96.08 f).
I'm currently on 3 grains of Thiroyd NDT & my temp is up to 36.4c (97.52 f).
I plan to stay on 3 grains for another week, then increase dose.
I'd be interested to hear other's experiences.
Repeating myself as copied from my reply to your other post:
When I did the Barnes basal body temperature test for 4 months, prior to taking THs, my morning temperature before self-medicating with NDT was 35.1 degrees celcius, most days. It was occasionally as high as 35.3. Now my normal is usually 36.1-36.3, occasionaly higher, so I assume that's my normal, 36.7 being average.
How you feel could be more important than comparitive numbers.
I started on 1/4 grain & increased every 2 weeks, knowing it would take more than a week for the T4 to convert to T3. If you've increased by a higher dose, & more frequently, it could kick in all at once. Don't want to p*ss on your chips, but perhaps slow & steady could prevent you having an issue with rT3.
Mine has been as low as 34.9 .
Haven't bothered to check for a while. Last time I did - ok.
When I'm going through a good phase my basal temp is around 97.4F ( 36.3C ), but can rise to the dizzy heights of 97.8F ( 36.6C ).
I don't measure it very often any more. I usually do so either out of occasional curiosity or because I think something is going wrong.
Thanks for the feedback.
I'll continue to measure daily & see if I can get to the magic 36.7
I'm on Levo and my morning temp is usually 35.3 I can get up to about 36 .5 later in the day
It's my understanding that temps later in the day (when active) are irrelevant.
What we're talking here is Basal Body Temp. On waking, before movement.
Are you sure your Levo is working?
I don't think it's working adequately I'm looking at NDT and T3
You could just switch (& you'd get plenty of good guidance on here), but if I were you I'd do a private blood test of your TSH, T4, T3 & Reverse T3
That will give you hard copy evidence of what's going on. You can then take that to your GP in future (when you're thriving on NDT) & ask for them to prescribe you.
I've had private bloods but not done the reverse T3 I'm seeing Doc tomorrow going to discuss it all with her ps love your tag name 
I used Blue Horizons. Really useful, because it showed that 150mcg Levo didn't increase my T3 at all (not even 0.01) & my Reverse T3 was high.
It enabled me to go to my GP & even though I don't think he knew what rT3 is, he was onboard when I said I preferred to go private (no way am I having some Endo spout BS). In a year's time, if I'm feeling brilliant & my bloods look great, I can ask him to take over my NDT supply.
Good luck!
Hi my bbt was routinely below 36 degrees upon waking prior to thyroid meds. Now I'm 36.4-36.6, raising and falling a little with my menstrual cycle. I monitored the bbt closely as I addend in T3 but it hasn't affected it which I think is reassuring. I also measure my blood pressure which has also stayed low throughout the adding of Levo and then T3.
My Basal body temps are mostly between 35.5 and 36.0 C. And metabolic rate is 1300.
Body temp
raised heart rate, low temp, trying to raise NDT
Dr sending me for a brain scan suspects thyroid to be cause of memory problems if scan is clear 
I'm new here.... Interested in hearing from anyone who uses Thyroid S 
