6 weeks & belly button is irritated

So once I hit six week my belly has definitely grown and become rounder! I know.. not a bump yet but definitely a baby bloat! I’ve been having some sensitivity on my belly button. And when I pee it feels weird. Anybody else experience this?? It’s so annoying and I’m wondering if maybe it’s from the stretching and growing my body is doing! I’m NOT in any pain what so ever.. it’s just a strange thing!