14dpo faint positive

Update:

HCG 180 today (16dpo). HCG was 65 48 hours ago. So almost tripled. Is this tracking ok? I’m nervous it’s still on the low side. Is there a risk with it tripling rather than doubling?

I think I’m 14dpo today and had a HCG 29 48 hours ago. This test was taken this morning (14dpo I think), is it too faint for how far along I am?

I had a miscarriage last month and hormone levels went back to 0 quickly. I haven’t had a bleed since and have got pregnant straight away but concerned it’s not viable. Also had ectopic last October.