Is it normal?

Ri`anna • First time mom Baby R👶🏽3/25/19

Is is normal for your stomach and uterus to feel a lil tight like it’s starching? I’m 14w and ever since this week I’ve been feeling like this, sometimes it goes away after I use the bathroom. I just wanted to see if I should be worried enough to call my OB. Any advice would be much appreciated👍🏾