Yours might be because of bloatedness. Cs my upper stomach feels hard whenever after eating and feel bloated. My first pee in the morning is also slow. I realised my pee after becoming pregnant flows quite slow. You can always consult your gynae if youre having concerns
Do you eat a lot? I think your gynae could advise better… Try to control on the diet a little, drink more water and cut down on sugary stuff…