Long wait to a good or bad outcome....

Hi. New to this forum
I found out I was pregnant on the 8th of April. Since then things not been smooth sailing.
It started with low rising bhcg levels
Not doubling like usual
Then a week ago started spotting, with cramping. The cramping eased. So did the spotting but it still comes and goes
Bhcg levels post bleed and cramp raised a little buys not much still. So confirmed I'm still pregnant but still spotting.
Had an ultrasound. Internal. And it didn't show any gestational sack but that my uterus lining was thickened. 2 reasons. It was too early gestation to see anything or I've already lost it.
So it's a long wait to next bloods/scan to see what's going on.
Has anyone else been through this to go on to successful pregnancy/birth?