treacle totally normal (well, to me anyway!) had terrible indigestion, waves of nausea and weird food cravings and couldn't eat certain things but it eased off at about 10 weeks, so I'm back to normal(ish) in terms of appetite.
People who are asking about exercising; from the reading I've done, if you exercised before pregnancy you should try and keep doing stuff during the 9 months, to a similar level of what you were doing before - i.e. if you were a 5 cardio classes a week lady, one walk a week whilst pregnant isn't really going to have a lot of impact iyswim.
Exercising regularly is good for you and the baby, and supposedly is a good way to try and avoid gestational diabetes (if it's not hereditary or you've had it before)
Since finding out I was pregnant I've been doing stationary bike rides on the spin bike, spin classes, zumba, body pump and fast power walking on the treadmill. I look a bit of a fool with the last one 
but if you whack the incline up and do a fast walk, you can get your heartbeat to around 130-140bpm if you want a cardio work out.
I have a heart rate monitor so I can keep an eye on what I'm doing, but mainly I listen to my body; if I get tired quickly or out of breath, I just reduce the resistance / speed / weight and take it from there.
My biggest gym issue is actually clothing - most stuff is tight and I just look like a chubster atm (looking forward to the day I look like I haven't got the world's biggest muffin top..) even in big tshirts