Super bloated & hard stomach

I'm only 5 weeks 5 days and my stomach has become so round because of all the water I'm drinking it's making me super bloated! I know that this is normal but what is a little strange to me if the top of my belly is already getting hard. I can't tell if it's from water weight/being bloated because it will be like that all day even if I've gone a little while without drinking a bunch of water. Before I conceived I had a slightly saggy stomach from being kind of chubby so idk if maybe it's the the water weight and gravity pulling my stomach down even lower and making me feel like my stomach is getting hard. It's really uncomfortable and I feel like I can't drink anymore water because I'm so full but I get such a bad cotton mouth that I have to. This is so annoying! I don't remember this happening with my first pregnancy. 😔😑 And I swear to god if one more person says I could be having twins I just might lose my shit. Lol