It could be constipation.. Everything slows down and your bowls relax so more nutrients can be absorbed for the baby.. that can cause bloating
And the hardness you feel.
I know what bloating feels like though. When i press on my stomach, it is hard like. I can't press into my stomach. Just a little freaked out :(
You could be bloating. The bloating you get in early pregnancy makes you look like your showing when your not, you will notice a difference when you actually start showing
They will confirm by ultrasound measurements and bloating can make you appear extremely pregnant. My belly remained the same rounded size from 11wks til I was 5 months.
They usually make an assumption based on your lady period to begin with but they will make a more accurate guess from ultrasounds.