How many ultrasounds? Need advice

Math

Hi guys- I’m confused on this topic and internet could not help me.. if you ever were pregnant (<a href="https://glowing.com/glow-fertility-program">IVF</a>) or got a bfp- how many weeks once did you do an ultrasound. I had one last week at 5 weeks 5 days (to see if sac is formed and if it not an ectopic) and I have an appt this Friday and I can go in every week till week 9. My husband wants to do every week but I’m not sure if I’ll really see anything or should I just do it?