Anyone know how fast HCG level drop

[sam1305]

Anyone know how fast HCG level drop.
48 hours ago did a cheap test a very faint line thought I had line eyes. So did a clearblue was a bit clearer so did a digital clearblue said 1-2 weeks. Done a cheap one today and clearblue and both negative. I'm an overthinker so o e minute I'm okay thats fine its just not took. But then I'm like does HCG drop that fast and if its dropped why has AF started and no signs of it starting no cramps no bleeding.
I'll attach the images of the ones done 48 hours ago but as there that faint its hard to see in pics. But the digital there to that clearly say 1-2

When rising HCG increases by approximately double every 48h
When dropping it decreases approximately by half every 48h but can drop quicker

When I had my first miscarriage my HCG halved in the first 16h and had more than halved again when they checked again 48h later.

When is your period due? When the levels are just at detection level variation in hydration etc can impact the detectable amounts of HCG in the urine.

My friend had clear positives on three PTs including a digital on a wednesday, had spotting the next day, then all negative on the friday.

Were your tests done on first morning urine? Maybe do another one tomorrow morning?

I think it can happen quite fast, with my chemical (I’m not saying that’s 100% what your situation is) I had a positive digital in the morning which was negative by evening, come the next day and all tests negative.

Im on cd 30. Got positives on cd 28. Which was the day I was due.

Those cheap ones are very sensitive and will measure even very low levels HGC.

Were the negatives ones in the morning or evening? HGC is higher in the first wee of the day.

Yes it was first morning urine. Double checked with my last clearblue this morning and completely negative.
Now wondering how long I need give it for bleeding to start everywhere says it usually only takes a couple of days.
The cheap test I have and clearblue says it picks up anything above 10miu/ml so if its below that shouldn't it start