Remember that. The feeling of a relapse, after porn or masturbating, it sucks. So don't do it. I know you have the strength in you! And if you fall, just get back up. That's what hero's do!
Sorry to hear that. Don't be alone during this difficult time. Reach out to IRL friends and be with them, if you can.
Indeed it is! But the first day is the hardest one. If you can get trough it, every following day gets progressively easier!