All the time. Deep inside, I've known I was supposed to be a boy since I was 5 years old, but other people's reactions to me convinced me that it was just me being 'weird' or 'wrong'. I was told repeatedly that I'm really a girl and that I'm expected to behave like one, so I spent the next 35 years desperately trying to figure out how to do that.
It wasn't until this year, age 40, that I finally came to a crisis point where I simply couldn't live any longer with society treating me like a female. And like you, I feel a sharp, stabbing pain whenever anyone tries to lump me in with 'the girls'. I even have a colleague who calls me 'lovely lady'. She's adorable and means well, but I just want to scream "I'm NOT a LADY!!!".
So yes, see a good therapist. They're not there to tell you what you should do: that's your job. They're just there to help you clarify your thoughts so you can make the right decision for yourself. Whatever it is, embrace it wholeheartedly as life's too short to spend it pretending to be something you're not. I wish I'd had the courage to stand up to my dysphoria when I was your age.
Good luck!