Doubts regarding tahaarat

Sometimes I have weird urination dreams. I dreamt of urinating and then I woke up as I thought it was real as I felt a weird sensation. I checked my pants they were dry I was wearing a pad but I didn't feel any wetness or heaviness I went back to sleep as my pants felt dry. Now when I got up my underwear was probably had moisture from wearing it. I did not feel any smell of urine neither did the pad felt wet from it. I'm doubting that what if it had come out and I didn't check. I'm getting paranoid as I don't know whether it happened or not. What should I do I had regarded it as a doubt and have sat everywhere and now I'm feeling doubtful.