You've put down a lot of thoughts today......whew! My brain can't even think that fast say nothing about my fingers keeping up with the typing.
You mentioned insecurities. I'm going to pick that out as one thing to think about. That is huge for me. When I was secure with H and my marriage, I knew that he was always coming home to me each night, and we went to bed together. I was okay with his interactions with other women, he showed me how much he loved me in lots of ways. And then, of course, it starts changing, and the worse it got the worse I got, the more insecure I was. Insecurity is a horrible feeling, it brings your whole life down. Work on that, a little piece at a time, to boost your esteem and build your security, it will sure help for your lifetime.
This 'new' you is just a couple weeks young. It will take a long time to settle in and be real and long lasting enough for both of you to be comfortable. Let it settle, let it take place.
Live your life while you are still living. Riding the trail less traveled.