PMO Reboot - Advice please?

Hi,

I turned 18 recently and wanted to stop my porn addiction, it was destroying me and my mind. I have been addicted since age 13 roughly, so 5 years of addiction. I have bad anxiety, depression and low confidence and I believe that's mostly because of porn. I have never posted anything like this before, but I've made 2 weeks now and i'm starting to get really bad headaches and feel strange (I think these are withdrawal symptoms).

However, on the positive side, I can see good things happening. I've got more energy, I'm feeling more confident and better about myself. My relationships are improving and my girlfriend seems to like me more. Also I feel better about not being caught up in sin (that is my belief). I called out to God and since haven't been addicted.

Few questions:
- Is it normal to feel pain in genitals after abstaining for ages.
- How long will it take for reboot
- Do I need to do anything else apart from not watching porn
- General advice?

I'm new on here and just wondering if people could offer some advice and encouragement, also I am sitting my finals soon.

Thank you