I never been this horny for no reason my hand was shaking and semen came out I never experienced this before is this even normal.
In all seriousness though, you're doing good man. Keep moving forward and don't think about porn or anything.
Sorry to ask such a blunt statement, and hopefully my response wasn't discouraging. In greater seriousness, my first guess would be anxiety. Especially in early recovery from daily masturbation I had somewhat similar experiences fairly often. Another contributing factor is caffeine and/or sugar. Many of the wise ones such as @EmmyB would suggest that you limit or exclude caffeine and sugar. I have not done a great job of that lately, but I definitely feel increased anxiety when I indulge in either. Semen doesn't usually come out for me, but it often feels like it's just about to when I am experiencing strong anxiety.