Relapse after three weeks

After three weeks later staying away from PMO I finally relapsed. The first two weeks I was okey but at third week, fantasy and porn fashback was contineously hitting by brain. Especially after waking from sleep at the morning fantasy become impossible to avoid. So I relapsed. The first ejaculation was awesome but in my second ejaculation I didn't feel any orgasm. Now I am trying to go to my tack again but I'm feeling an urge to watch porn again althoug I know that If I watch porn again I will ejaculate without orgasm. So, in this case, can anyone help to deal with this situation?? Especially how to deal with fantasy and porn flashback???