I had a PI-RADS 4.
60% chance of clinically-significant cancer.
Next step is a biopsy, to get samples.

Nag them. Now is not the time to be quiet & worry about "bothering them".

A week is a long time to worry, but as you'll soon find out, the waiting is the hardest part.
You're on track for a biopsy & it may take time - but it doesn't hurt to ask for a time frame.

Good luck.