Feeling pelvic pressure ?

Adriana

I’m about to be 31 weeks on Wednesday and this morning I kept feeling pressure like if the baby was pushing down on my pelvic area . It did not hurt but did feel pretty uncomfortable. Could it be a sign of preterm labor ? Also the past two days she had been moving non stop and today has been a slow day . She has moved but not as much as the past two days . Should I be concerned? Anyone experience this ?