Hi, I wouldn't panic, not everyone experiences morning sickness, particularly if it's your second child. I'm on number two and it's completely different to number one, I often forget I'm pregnant. Always best to have a check up anyway as you'll feel tons better when you get proper confirmation all is ok.
My mum states that she was never sick, or even felt nauseous with me. I did hope I was following in her footsteps. Then week 6/8 hit me and I've got nausea and retching - lovely. I hope you can manage to stay like you are (and my mum!) as the nausea is not fun!
(Sorry about the double timeline thing - I'm not sure of which week I'm in at the moment because there's a conflict between my period date and an early scan that won't be resolved till my next scan!)
I had no symptoms when I carried my DS. Shocking first pregnancy with DD so it was rather pleasant to experience. Although I did get a bit stressed around 12 weeks - scan wasn't for another 2 weeks, no symptoms, no bump, I nearly convinced myself I'd made it up! But then the bump seemed to appear overnight so I felt a bit better!
Very few symptoms here, no sickness with any of these three, very tired in first 12 weeks and ridiculously sensitive sense of smell that's it. Carried exactly the same all bump with dd and ds so who knows with this one