If someone has a joint account with someone should you get permission from that person, even if that person is the primary account holder?

I’m planning to take a summer course and the payment was today so I just went on and paid it. It is $376 for one class. I know I am the primary bank owner but my dad is jointed so I feel like I should’ve got his advice first but my money though. I don’t know why I feel guilty for spending it in the money came out of my account. I have the money for it which I have no problem but I would’ve waited to pay for the class but it was due today so I had to. I don’t know why I would have permission, i’m 27 for crying out loud! I know I’m getting so anxious. Plus I’m on unemployment. Financial Aid wasn’t going to pay for the fun classes so I had to do what I have to do.
I’m jointed to my dad’s primary checking account as well because he’s the primary owner on his.