Hating pregnancy!

Leah • Pregnant with #2 have a 6yr old son from previous relationship. Work full time at the moment as a activities coordinator
I don't know what's going on with my first pregnancy was no problem, little sickly at first but then fine. 
This time I am only 16weeks and I have not stopped feeling like crap. I have awful stomach pains from 5weeks, headaches, not stop sickness and 4 stays in hospital. I really am hating pregnancy this time, please tell me I am not alone?