Don't stress out so much! I'm sure everything is fine! It really sounds like early symptoms of pregnancy, but touch wood as you say the morning sickness is only very mild! lol!

with my first pregnancy i was very similar to you, nothing really. As soon as I hit week 12 my morning sickness was extreme! I couldn't keep anything down, and lost 8kgs in 5 weeks!

But like NaeNae said, if you are concerned visit your GP
He can always write up a referal for an u/s - and let me tell you when you first see your child on that screen - you're hold world changes!

Hope it all works out!