Every day I feel like I can barely stand up and my head feels really heavy, im 5'8'', and weigh 165 but it will fluctuate to 175 or more in one day. I cant focus on anything, I try to run but it is extremely hard, I basically feel like I am not even breathing. I semm to be also losing my sense of smell, like I can't smell anything unless its up close, one week i just gorged on fast food becuase I can't ever tell when im hungry or thirsty and I actually started to get my smell back it was weird. Am I completely unhealthy or something? I feel and look different every day. Is this normal?