Its completely fine .Everyone in life have bad days but i believe bad days come into life to reach you the worth of good days. But i feel bad days are good teachers they teach some good life lessons, clear your visions . Even i have bad days so many times but here nobody understand me too ,i often started believing that i am overreacting, but then i console myself that you may be overreacting in front of others but deep down u know its hurting you which you cant actually put into words in front of others. rest Have faith in you.

I have similar phases when I feel really bad and nobody understands. Those days, I love myself a little extra. I take myself out for coffee. I go out and eat sushi by myself. I go to the parlour. I do things for myself. You are your own bestfriend and you can make yourself feel better?

Having a bad day is one of the phase of life. Life is beautiful in it’s own way . Leading life is though somewhere difficult but it gives happiness to us. Having entirely different experiences at different points of time makes us learn new things daily. 
Sometimes one get broken,  but others get success and happiness and vice- versa. 
Even though your day was bad but i can guarantee that may be you could have learn something new which will help you in various ways in coming future.