Minor prego symptoms

I am 5.4 weeks and I have had little to no symptoms at all. I have had one day when I was exhausted but other than that I feel normal. I'm a little nervous bc my husband and I had a MC in December. It's like I can't wait to have sore boobs and morning sickness so I know that my lil chocolate chip is still in there growing!!! Is my lack of pregnancy symptoms normal? Should I be concerned?!