Why is my blood pressure so high at 26?

I just took my reading and it was 147/97. My pulse was normal (between 90-100).

I'm only 26. Just a few years ago when I was 21 I had a normal ranging blood pressure. I am obese but I know of people that are obese around my age and have normal blood pressure.

I took an ECG and the results were normal. So it’s not totally bad but still, this is like stage 2 high blood pressure.

Why is my blood pressure so high at 26?
Post Opinion