That pit in stomach feeling

I am living in constant confusion now. I have no idea if I am thinking too much or is this feeling real. I have never felt this way so constant before. I keep telling myself I am thinking way too much but am I? Or are my feelings real? 

Last time if I were to feel this way, I would say something or do something about it. This time I am just fill with fears. Afraid of saying what is on my mind because someone would just shake it off and says that I am thinking way too much. But how if I am not? How if what I am feeling is real? How if all this stomach pit feelings are real? 

I find myself not being able to talk to anyone. I just have to figure this out all by myself then. :(