I imagine it would be very difficult to be in the middle of such large changes to your culture. Just as it would be difficult to move to a new culture who has different behaviour norms to what you know and believe.
I had a young friend who had the opposite problem to you: she was 17 and living in Australia, but was raised with ideals of Islam. She was torn between wanting to live as an Aussie teen and wanting to respect her upbringing.
Never regret anything that has happened in your life. It cannot be changed, forgotten or undone. So, take it as a lesson learned and move on.