Pressure under belly

Well I am 32 weeks , high risk .

I went into preterm last week on Friday & they stopped it I was 3cm...

I went to a follow up at my docs and was told 2cm but all I know is I am dialated....BUT ive been noticing this pressure on the bottom of my stomach , it don't last long but pressure and sorta lose my breath for a bit & goes away...its not painful .

Baby has been moving well...

I do plan on informing my doc office just to keep an eye out but any of y'all feel this ?