Is it possible to start showing at 10 weeks with your first baby?

I've been completely flat from the start I haven't even had any bloating. Now I feel like I can see a little bump and when I feel it it feels hard like something is starting to poke out above my pubic bone. I'm trying to work out if it's just bloat but I don't feel bloated lol. Is it even possible to show this early with your first? Is anyone else?