This is morning sickness (in short forum call it MS). Welcome to motherhood :-) The duration of such morning sickness varies for every mother. Like myself, the first baby, not much of such MS. But for the second one, now I am into 13 weeks and the vomiting part is still too much to bear. Other symptoms you might/might not get it is headaches, tiredness , gastric, heartburn, bloated stomach etc. By the way, hormones pill can cause nauseous as well. Do not worry much on whether baby will get nutrients now, they will eventually when your MS stops.