Two main concerns

Firstly, I having more than 10 loose stools in less than 24hrs and my lower abdomen pain. Which i never encounter before. Secondly, I hear my left side abdomen sloshing sound when I move or bend down for my prayers its sounded like someone moving a water balloon around. Normally i didn't hear any of it. Should i be worried of this two concern of mine? This is my first time pregnancy and i currently in 20 weeks with twins.