AITA for secretly entering a cooking contest, placing second, and “embarrassing” my mom by acting like it was an achievement?

I (17F) have always been seen as the "disappointment" in my family. My mom is a neurosurgeon, and she’s constantly comparing me to my cousins, who are all excelling academically. I’ve never been great at school—my grades are average, and I struggle with math and science—so I’ve always felt like I can’t measure up to her expectations.

What my family doesn’t know is that I’ve been teaching myself how to cook for the past year. It started as a way to deal with stress, but I grew to love experimenting with recipes and trying new techniques. I’ve been working part-time at a café, and the chef there let me help out in the kitchen during quiet shifts, teaching me a lot. A few weeks ago, he suggested I enter a small local cooking contest. I didn’t expect much, but I ended up winning second place.

I hadn’t told my mom because I knew she wouldn’t take it seriously. She’s always said things like “Cooking is just a life skill, not a career,” and I didn’t want to deal with the lectures. I figured I’d tell her eventually, but I wasn’t in a rush.

Yesterday, during parent-teacher conference, my home economics teacher brought it up. She's a very nice teacher who I feel very close to. I had told her about it and she thought my mom already knew, so she mentioned how impressive it was that I’d placed in the contest. My mom didn’t say much at the time, but the moment we got in the car, she exploded.

She said I was wasting my time on “hobbies” when I should have been focused on school and accused me of deliberately keeping it from her to embarrass her. She also said I’d made her look bad in front of my teacher for “acting like this was an achievement.”

Now my whole family is mad at me. My aunts and uncles are saying I should’ve told my mom so she could “prepare” and that I shouldn’t have entered the contest in the first place. My dad, who usually stays out of things, said I owe my mom an apology for stressing her out and suggested I quit the café to focus on my grades.

I don’t feel like I did anything wrong. I didn’t ask my teacher to bring it up, and cooking makes me happy. But now I’m wondering if I really was selfish for keeping it to myself. AITA?

Edit: Thanks everyone. I seriously needed the support. You all are seriously super sweet <3