i didnt start getting sympotms till i was about 7 or 8 weeks...
definitely normal at 5 weeks i had hardly any symptoms. :)
I'm currently 4wks 6dys and I look forward to no symptoms. Although, I think my left nipple is sore.. :) Seriously though, one can be pregnant without the symptoms and it wouldn't be a bad thing.. I hope you continue to have none.. nothing worse than the gag reflex popping up at the store over samples.
I think you're asking if it is normal... If so, yes it is normal. Many people don't have morning sickness or other symptoms the entire pregnancy. Remember, 5 weeks is VERY early in the pregnancy so try not to worry too much.
Yes, some women never really have much for symptoms while others have every symptom there is. You are what some people would call lucky. And don't get too excited yet - a lot of women don't start getting them until around 6 weeks. Good luck to you.