Is My Baby Bump Supposed To Be Hard?
When your pregnant belly feels rock hard and firm all over, it's usually because you're having a contraction. This is nothing to worry about. It's normal for the uterine muscles to contract and harden as a practice for true labor.
Are pregnancy bellies hard or soft?
When does your belly start feeling hard during pregnancy? This varies, but it's usually during your second or third trimester. As your uterus grows, it eventually pushes against your abdominal wall, making your abdomen feel firm. The muscles and ligaments around your uterus stretch, too, which can cause mild cramping.
Why your pregnant belly feels tight and heavy - BabyCenter
Should my pregnant belly be hard?
Generally, you expect a hard stomach when you're pregnant. Your hard-feeling stomach is caused by the pressure of your uterus growing and putting pressure on your abdomen. The hardness of your stomach while pregnant can be more pronounced if you eat a low-fiber diet or drink a lot of carbonated beverages.
Hard Stomach: Causes and When to See a Doctor - Healthline