How did god create the universe...

..if he was born after the universe was created? My 4 year old self asked this question to my mom. My family is catholic but not fundamentalist (thank goodness) and my mom said that god created the universe and that jesus was another being created afterwards. Even at that age I knew that this idea didn't make sense at all because catholicism states that the father, the son and the holy spirit are the same. When you think about it, how weird and fucked up would be to be your own father?