sorter

I am a 24F. Last week I went in town to deposit a paycheck and informed my brother (18M) where I'd be going. He asked if I was already going into town if I could pick up his skin cream from the pharmacy. He said it should've already been pre paid for. I said yes.

I picked up his cream from the pharmacy and the cashier told me it would be ten dollars. I had assumed it wouldn't be pre paid for already but paid for it with my money. When I got home, I handed my brother his skin cream and left him alone.

Yesterday was the first time I really got to have a proper conversation with him since he and I were at work at different times throughout the week. I told him about his skin cream and that he owes me ten dollars since it wasn't pre paid for. It's his prescription, not mine.

He immediately said no, that it wasn't his choice to get a new prescription cream and he never wanted the new cream in the first place. I understand it wasn't a lot of money anyways but I still demanded he pay me back since it was my money that I spent on something that wasn't for me. He told me to leave it be and if I was really desperate for my money to ask our mom to pay me back since she was the one who ordered the skin cream anyways.

My parents told me to just leave it be and that they would give me the money if I was that desperate for it. I said no, that my brother has a job and since it was his skin cream, he should be the one to reimburse me. I asked my brother to pay me back once more and if he didn't, I wouldn't pick up stuff for him anymore.

Now my parents are telling me I overreacted to the situation and to let it go. My brother said I didn't have to be so pushy and act like I spent a lot of money on one thing. Now I'm questioning if I was acting entitled and should forget about it.

AITA for demanding my brother pay me back?