explanations for low basal temp beside thyroid/anovulatory?

[Anonymous]

I have charted for the past year, after the birth of my son. I conceived via charting so I feel like I know how to do this. I consistently have low temperatures, highest is 98, at my normal waking time. No jump to higher to show that I am ovulating. I now use the OPK too and they show I am ovulating at the right time (mostly). I am not BF. Thyroid check normal. I know sometimes I might not ovulate, but this seems excessive. RE not concerned and wants to do IVF, DH and I want to continue timed sex for a bit more but I'm worried that I'm missing something. Advice? TIA!!

[Anonymous]

Opk will not confirm ovulation. You can have an Lh surge and still not ovulate. If you are conident that you know how to chart, then you should see a temp shift. My temp never goes past 98, I am in the 97.4 range and then close to 98 after ovulation. You should request ultrasounds to check your follicle growth to see exactly when and if you are ovulating.

[Anonymous]

OP here: thanks for the response. But before my temps were above 98 when ovulating and stayed that way when PG. Maybe now I just have lower temps. I will ask RE for the follicle count and more info on ovulating. And thanks for the great point: OPK check LH, not actual, so I've been over relying on them.

[Anonymous]

I would think they can do u/s throughout the first 15 days of your cycle to check growth and if they see a dominant follicle and it reaches certain size you know you will o soon