Terrified of brain tumors

These past couple of days, I've been making posts across reddit about my suspicion that I have a brain tumor. I've made about 20+ posts in 2 days and I feel like I'm spiraling out of control. I've barely been getting any help, and I don't know what to believe anymore. Most advice I've gotten is to go to the doctor but, I don't think I can do that. I'm 14 years old. Most I can do is a school nurse. But, I don't think that's even an option. I've had a 3 day headache, I've been stuttering, forgetting words, and fusing them on accident lately, I've also been having some balance problems and also I'd occasionally drift slightly to the side when trying to walk. I've also experienced some tiredness But please, if you can help me, please try, it could really help me.