Although morning sickness and being sick in general is quite common in pregnancies, you should be concerned that you’re not getting enough nutrients into your system. There are two possibilities, either you’re experiencing normal pregnancy symptoms, or there is a problem, perhaps you may even have the flu.
I suggest that you visit your doctor. They will either confirm that your symptoms are normal and give you some suggestions to ensure your health, and the health of the baby of course or they will find that there is something else going on in which case they will be able to solve. Either way your doctor should be consulted.