Lately ive been feeling really tiered and quite sick although i havent actually been sick. I keep going hot and cold and i feel like this at work as i work nights. i cant go on to days as it wouldnt work out with Lately. Would the doctor sign me off for a few weeks until i start feeling more myself im just fed up with feeling rubbish at work. Also ive got alot of gas and it feels like im going to be sick.im nearly 6 weeks and never had this with my first.