M.K.
It's different for everyone! For me, I really hated the term "morning" sickness because it was more like "all day" sickness!!! I found that eating a cracker before even getting up helped a little. It also helped me to just nibble throughout the day instead of eating actual meals. And drinking sprite or ginger-ale helped too.
For me, the first three months were the worst, then it tapered off and came back a little in the last three months.
Hang in there - the end result is soooooooooooooooooooo worth it!!!
Good luck!!!