I'm sure I read somewhere that your metabolism speeds up during pregnancy but I am sure mine has slowed down completely. When I can actually eat I get what I think is indegestion, where my chest and mid back feel tight, and I can literally 'feel' the food sat around in my stomach. It's worse at night, even if I eat before 7 I keep waking up in the middle of the night or early in the mornign with a heavy nauseous feeling in my stomach. Also, usually I'm am 'regular' as clockwork, but currently don't seem to be going to the loo very much.
Any advice - I'm am so unconfortable and I've had a b*tch of a day - I even cried at work!
BTW I am 7wk+3