I had the same problem. Thats the reason i knew i was pregnant because my belly was big & hard. I thought i was gonna be pregnant with twins lol but its just one baby in me.
^^i agree ur just bloated ur baby is still very very very tiny at 10 weeks n bloating can really feel like ur showing but u still have some time to go n don't rush it lbvs having a belly is so painful n uncomfortable specially at night lol
It's probably bloating. Your uterus is still really small so it can't exactly be pushing your stomach or all that much. Bloating can really be crazy though.