I know its too early but I feel pregnant!!

So..this is my first time using an app like this, and also my first time actually ttc. I have 2 girls already but im ready for my little boy!! Ok so today is my last fertile day so my wait begins..I already want to test as crazy as that is! My period isnt supposed to start until the 19th so I have awhile to drive myself insane(thank you, anxiety). Because of the fact that i have anxiety that makes me create things in my head that arent real lol I dont know if I have just cinvinced myself that I have symptoms or if they are valid, so opinions would be helpful! I have been dizzy, unbelievably tired, sensitive, I am either super hungry or too nauseous to think about food, tingly feeling in my breasts and sore nipples(my breasts themselves arent sore),ive had back pain(more so than usual as i have scoliosis). I feel like its too early to show symptoms, am I crazy?