Strange

I am in my 7th week now. As I have prior experience of miscarriage, I am super paranoid here.... When I don't experience any discomfort like wind in stomach or indigestion or pulling sensation at my uterus, I will feel uneasy. But on some day, I experienced everything above. Is it normal? Do you all experience some days with a lot of discomfort and some day total breeze? Hoping my little bundle of joy is growing fine and the above is not a signal of something else.