Bladder infection or uti

Anyone had a bladder infection or UTI during pregnancy? I used to get them pretty frequently so I'm familiar with how they feel but the last 24 hrs or so I'm feel like..maaaybe I have the start of one? It's weird, they are usually quite distinct (and beyond awful). But right now I just feel pressure. Is this normal super full 3rd trimester stuff or possibly a bladder infection?