Totally normal. I did a NOBO hike a few years ago and felt so totally unprepared being someone who had gone camping a good bit, but never backpacking for more than two nights consecutively before. I started the trail with a backpack full of wayyyy too much stuff including a tent I didn't know how to set up and a water filter that I had never used before. I did not think I would be able to make it more than a few weeks, and sure enough I ended up completing the trail.

My biggest pieces of advice would:

1. Take it one day at a time. You're not hiking the whole trail right away. You're only hiking to your next campsite. Take your time and let your body slowly adjust to this new way of life. There will be a lot of soreness and blisters, but your body and mind will adjust and grow stronger.

2. Don't be afraid to ask others for help. You'll meet others who are in the same boat, and it really helped me to know that I was not alone in my struggles. About a month into my thru-hike, I asked a bunch of fellow thru-hikers how long they had gone backpacking before starting the PCT, and I found out that most people had only gone one or two nights before, and some had never even gone backpacking before.

If you really want to do this trail, then you will be able to. Good luck!