I definately felt weak at about 5-7 weeks, i actually posted in my thread coz i was really worried, i had been throwing up a fair bit though, and trying to eat was impossible coz nothing would stay down, it lasted about 2 weeks before i slowly started feeling a little better, but even now- i am still very fatigued, i had a sleep in today- (i am late for work, but i just couldnt get up!!!) and i am 12 weeks and i am hoping that hte 2nd trimester energy boost hits really soon!! It is very draining making a baby, it takes alot out of our bodies, but if your friend is worried, it wouldnt hurt to go to the dr and get a few blood tests, just to make sure she hasnt picked up a bug or something which is contributing to her tiredness.

I wish her well!!