Please help!

EctopicSurvivor • Engaged 💍 TTC After Recurrent Miscarriages & an Ectopic (DECEMBER 2021).
3DPO today and my temperature still isn't raising. If I enter two more high temperatures it comes up I am 3DPO today. Just wondering why my temperature is so low? This is our 16th month with TTC and this is the first time I've seen this!