Hi Karina,
Congratulations on your pregnancy!
What we always need to be mindful of is that our bodies are ours - you don't need to be 'allowed' an early ultrasound. If you have informed yourself of all the pros and cons and you decide that the best thing for you is to have an early ultrasound then you need to request that. As I said above early ultrasound is not indicated for pregnancies where there are no indicators for problems or where there is no past history of problems. However only you know how you are feeling and what you are needing. I urge you to discuss this with your care provider, get some info on ultrasound and make your decision.
Good luck with your pregnancy I hope it is a happy healthy one.