I’m sorry to hear you needed both. I had a natural miscarriage this week and surgery in March and both times the hospital said test after 3 weeks. For my first miscarriage it took just over 4 weeks to test negative.
The DR has advised me to test after 3 weeks and call back if it's not negative. X
I tested negative after a week. But I was instructed to wait two weeks so I took it a again 1 week later just to be sure. So no harm testing after one week.
I was negative 1 week after ! So maybe just test and see x