When would you tart buying for baby?

I’m newly pregnant (5w3d) and we are over the moon excited because we struggled for over a year to conceive and we both are wanting to spend all this money on baby items we love, but I think it’s too early because I’ve had a miscarriage before at 5 weeks and I’m afraid. We aren’t even telling the family until 8 week ultrasound. Would you start buying immediately? Or wait til much later?