Congrats on your baby! I have experienced the same kind of pains here and there, and then they'll go away. I'm 18 weeks. It is completely normal. Your body is accommodating a baby that is ever growing and things are stretching and moving and growing and will cause pains from time to time. I would say if the pain got to a point where you know that something could be serious, make an apt and get it checked out. I had those pains with my first as well. Blessings on your pregnancy!