morning sickness

I used to have a collegue. For both of her pregnancy she is active and no mornimg sickness. She can eat anything she wants and gain weight. She have healthy babies. But for me my 1st preg I have morning sickness all thru my till my 3rd trimester alot of things trigger my nausea. I did not gain weight and keep being admitted to hospital for various reason such as bleeding. My 2nd was much better only when I am hungry and smell certain thing such as coffee then I will get nausea. I too get very tired easily. The thing is every pregnancy is not the same. But if u are worry or concern do speak to your gynae.