Sure you can have signs at that time. With Hunter I showed signs at 3 weeks, and with Liev I had horrible morning sickness by 4 weeks.

Yea. When I was pregnant with my son Canaan I had experience horrible morning sickness and before I even knew for sure I was pregnant (I thought I was just sick) I kept having morning sickness off and on throughout the remainder of my pregnancy especially when I smelled unpleasant smells and raw meat. I'm not sure why raw meat but it never failed to make me get sick. Everyone is different though and some people have it only for the first couple weeks while others may experience morning sickness throughout the whole pregnancy or some may only get set off by certain smells like I did.

I had morning sickness by the begining of my 4th week! so its definately possible

at 8-9 weeks I started to bloat and get morning sickness. I didn't think it was pregnancy until we took a test to make sure and after the second positive, we were convinced.

umm ya, I know im expecting multiples, but a week before my period was due my boobs hurt so severe lol. in I had morning sickness like crazy in I was showing @ 6 weeks, The day I found out I had to go in buy some comfy black clothes for school, because the clothes I had felt like I was growing like an amazon woman... lol