Why am I losing weight at 5 weeks?

it is normal to lose a little weight in your first trimester. i know i have, i started out at 128 and i am down to 122 and i eat like every thirty min, but i have started to get the baby pudge (i am 11 weeks). dont worry about it you will be fine. but one thing i do have to let you in on is you should exercise, it is really good for you. believe me i know what the tired feeling is like but getting out and walking is better than nothing. good luck and congrats!!!!