Me and my partner are experimenting with butt stuff and I had a few questions.

After using a butt plug for the first time I noticed I felt a bit gassy and it kinda itched/burned a little has that happened to anyone else?

I’m trying to take it very slow because I’m worried about causing injury, it wasn’t exactly painful, it was kinda uncomfortable at certain times tho, is that normal? How slow should I take it? I’ve read online that you have to use enemas before is that true? And we noticed we didn’t like the lube that we were using does anybody have any lube recommendations?