When should I test to see if there is no hcg left?

So Monday I had a confirmed miscarriage and the bleeding is starting to slow down and become brown when should I take a pregnancy test to see if the hcg has left my system Ik your supposed to go to your doctor but I’d rather wait until after I get a negative pregnancy test or if something is actually wrong because the doctors in the town I like in are real numb nuts if you know what I mean you truly have to be your own advocate when you go in and it always takes so long and for them to do my blood work I can only go Tuesday or Thursday when the lab is open it’s just a big hassle so I’m trying to handle everything at home on my own . Any advice will be appreciated ladies 💕 baby dust to us all 👶🏻✨