I mean, I did DMT with no other psychedelic experience (except for MDMA, but I don't consider that a genuine psychedelic...)

My girlfriend has done DMT with me a few times, and she has never even so much as smoked cannabis. I educated her and guided her through it, and she has now had a set of valuable experiences with it.

Don't sweat it, man. Don't underestimate it, it WILL blow you away, but it's a positive thing.