six weeks

So I've read about bloating, constipation, weight loss and bra size going up but I don't seem to be experiencing any of this except bloating. I am on the thinner side. Before pregancy I was 5'4" and 105 pounds. I now weight 110. I have a lot of bloating in my tummy to where some work pants no longer fit in the waist. My boobs haven't grown but my nipples are sensitive. I don't have constipation. Instead I feel like I go more often. Is anyone else experiencing this? I feel odd knowing I'm pregnant yet not having a bump or feeeling movement. I guess just looking for confirmation.