Is this normal ?

I may sound crazy to all of you now , but is it normal to not feel pregnant ? I defently am due to loads of test and a early ultrasound at 5 weeks , I'm 12 weeks and 3 days today and I don't feel it at all ! I'm so grateful I haven't had morning sickness but I honestly don't feel pregnant and I haven't at all though out ! Some of you may be praying for a easy pregnancy that I'm having but I'm just finding it odd , as I'm 12 weeks and no symptoms , I'm not ill , I sleep fine , no tender breasts , I still eat the same , not tired , or is it just becuse it's my first ? Confused !!!!!!!!