first time being pregnant advice??

just a question... why do some ladies go in for an appointment/ultrasound around 6-7 weeks and when i just called my doctor they don’t need to see me until 11-12 weeks? i feel like i’m going to make myself crazy before then lol. i just wanna know that everything is okay! i have been taking prenatals for 1 month as i started them last month while trying to conceive and ended up pregnant so i will continue taking them. is there anything else i should be doing to make sure everything goes okay before my appointment in a little over a month? any advice would be appreciated!!