26 weeks and in pain ?

i keep getting poo/gas pains that come and go and goin to the bathroom, not pooping and having any feeling of needing to poo/ pass gas go away. I keep freaking myself out because labor with my daughter was hours of feeling like I was just constipated and needing to pass gas or use the bathroom. And never having regular contractions with a patter . So I’m just nervous ! & any tips to help me feel better?