With my 1st child (son) I remember being very tired and had morning sickness right at 6 weeks...last until about 11-12 weeks I think. That was 16 years ago so i could be off a bit.
With # 2 - (daughter) I did have morning sickness and it lasted off and on until the beginning of the 2nd trimester. But it was not as bad as my first pregnancy.
#3 - (daughter) - I was only queasy. I only threw up a couple of times and it wasn't much.
#4 - (unknown). I'm only 5+3 today so the only symptoms i'm having right now are nipple tenderness, fatigue, frequent urination and occasional nausea. Feeling pretty good right now actually. Not sure if i should be worries about that or not. But no cramping or spotting so I'm assuming all is well in there.
All the other symptoms were pretty much the same for the other pregnancies, fatigue, boob soreness, heart burn, etc.