Well... You said that your dreams are so realistic that you don't question it, so you should provably start questioning everything.

Hukif once had the a similar problem. No RC would work for him. He would think that he was dreaming and every RC would tell him that he was awake. So he invented his own RC. The gravity RC. the basics of it is that he realized that the dreamworld was near flawless, but his body seemed to weigh too much or too little. Or objects would seem that way. He put it in his mind to memorize and keep in the back of his mind what his body felt like. When he got into a dream (after 2-3 months of constantly keeping that in his mind all day) he realized that he was dreaming and ever since then his LD rate has skyrocketed.

Good luck! I hope this story helps you like it helped me.