Girls, what is the best time to register for prenatal care? I went to …

Girls, what is the best time to register for prenatal care? I went to see a private gynecologist, had an ultrasound done. Now they need a VKK certificate for work. They said to register. I plan to go to the state clinic at my place of residence. Can you tell me if going in at 10 weeks and 5 days is too late? ? First they will send me for tests or immediately register me? And when is the screening done after registration or before? How many days will it take? I'll be grateful for any answer ?