I'm not on drugs and have never tried it

OK everyone someone help me. I don't know what is going on. I'm not pregnant. But anyways I am exhausted and I don't feel right my skin is so sensitive. It feels weird if I run my fingers on my arm like it hurts a little but barely. Also I'm not hungry at all and when I am I take like two bites and I'm stuffed. IDK what going on it just so hard to explain. Help anyone