Morning sickness? When does it start(average)?

Desiree
What is the average time in a pregnancy a woman will start getting morning sickness? I am 8 weeks and haven't had any symptoms for it yet and honestly hope I don't. I hate getting sick as I'm sure everyone else does to. Plus I love food lol! Someone whom used to be a friend asked how far along I was and if I had been sick yet. I told her at the time 7 weeks and no I had not been sick yet thankfully. She proceeded to tell me she hopes I do and that she curses it on me. Oh well whatever I don't really care what she thinks or what she wants to happen. But I am curious as to when most women start having it. I know some women have it their entire pregnancy and some for only a few short weeks and others not at all. But when does it normally start? Thanks in advance:)
UPDATE: forgot to mention I don't eat or drink a lot of things that make my stomach feel yucky. I can't eat or drink anything dairy with a high fat. I have went from whole milk to 1% because my stomach would feel terrible after drinking some and I've cut back on how much I eat so my stomach dosnt get to full making me feel like I'm gonna get sick. Caffeine makes me feel sick to so I don't drink it often. I might have a glass of sweet tea a day but mostly I drink water. I try to eat light and healthy. Fruit is my best friend right now😆 I can eat it without any ill effects! Lol.