Maybe starting to show?

I am 11 weeks and 5 days pregnant and it is my first baby. I know that typically first time moms don't show until later, but my stomach has been getting pretty firm and I can't suck in anymore. Nothing changes and it hurts to barely even suck in. My mom says there is no way that I could already be showing. So maybe I'm not showing, but going to be soon? Idk. Its definitely not bloat.