Hi everyone Im currently 15 weeks preggers and im not showing, Im no longer sick and all I can feel…

Hi everyone Im currently 15 weeks preggers and im not showing, Im no longer sick and all I can feel is like a tough ball or pressure deep down. I have not done an ultrasound as yet. I am going in for it next thursday. Have anyone had a problem like this and everything was ok? I'm super worried right now.