Hi Vicky! Congrats on being pregnant!! I'm a private patient (not sure if you are) but I pay a lot to see my OB so I may as well see him if I need to. This pregnancy I've been back numerous times with different worries. It will make you feel better if you do. If it was me I would ask the question.
My assumption would be that the feeling your having is your uterus expanding but you should check to make sure. Good luck xo