I have been feeling very tired constantly, feeling very sick on and off for a few weeks plus bloated and uncomfortable? definitely not pregnant.

See a doctor: There are many different causes of fatigue and bloating, and often times medical tests including blood work are needed. An appointment with a doctor is recommended. In the meantime, make sure you are doing all you can to keep healthy: getting enough rest, eating and drinking healthfully--fruits, veggies, lean protein and water, and avoiding tobacco, alcohol and other drugs. Feel better!