By now, I'm 6 weeks and 2 day pregnant. Is it okay if I don't undergo TVS for my 8 weeks pregnancy?

If cannot see or hear clearly from abdominal ultrasound, usually gynae will ask to do tvs.. but recommendation is to have gynae appointment after 7-8 weeks? I wanted to have my first appt around 6 weeks but the clinic suggested to come at a later date.