I'm in the middle of my edits, and I noticed I wrote: "Oh, thank god." Now, would readers be offended by this? I heard American readers can find it off-putting. F-ing this and f-ing that is fine, but if a character is startled and says "Jesus Christ", then it's a five-paragraph review on Goodreads saying the author has a potty-mouth. I'm not religious, far from it, but this does worry me.

How have you gotten around this? Do you still write it regardless, or do you change it to plain old swearing/cursing?