Low initial hcg

Looking for anyone with experience of very early hcg not doubling. I have done enough research to know that it can be good or bad and that this early low numbers or numbers not doubling every 48-72 hours can be caused by a number of things. I’m just looking for personal experiences.

11dpo = 24, 13 DPO = 36, 44 hours apart.

I’ve attached photos of my tests as well (and yes, I understand they aren’t reliable for levels of hcg I just wanted to include them)