17 weeks hard stomach and cramps&pains

Is it normal to have a hard stomach and pains like this?

I take prenatal vitamins and my iron pills. Since last night I have been bloated bad with a hard stomach and pain, I was very very gassy and constantly in the restroom as the day went on the gas went away and so did the constant pooping but the hard painful cramping stomach is still here. Should I be concerned because I am