Dear Vendela, you need to make sure that Dad spends the time to explain to you what all the rules are prior to traveling. I'm sorry that this experience was uncomfortable for you but a quick check by your Dad of your back pack prior to going to security would have prevented this. It's been a rule for a long, long time now that no liquids are allowed. And phones ALWAYS need to be out of your back packs, pocketbook, coat, etc before going through security. Don't blame TSA, they were doing their job. Your Dad should have done a better job with his parental supervision of what you were/were not allowed to take with you and this would have never happened. If he had spent the 2 minutes doing a pre-check before you walked through security, this would have never happened to you. There are many rules in today's crazy travel world and it's up to your parents to help you to understand them!
—————