Successful IUI - what about my next pregnancy?

Hi all. In October it will be two years since we had a successful IUI. My daughter turned one last week!

We want to try again for another baby. I am just curious for those who have gone back for a second time if the doctors will make us TTC for a certain period of time before doing another fertility treatment? Do I have to go through the testing process again? How do I reach out to start again?

We never originally found any problems with female or male fertility for us.

Any tips or info would be wonderful! Thanks so much!