what could this be?😳

Lasean β€’
Just today I have turned 29 weeks. And earlier I began to feel a lot of pressure in my lower abdomen/pelvic area and at first I was thinking oh it's just the baby moving down or balling up like he usually does. But now it keeps happening frequently and getting worse and worse. And the pain has moved to my lower back. I wanted to restrain from thinking it's contractions because I'm not having any other symptoms that could suggest I'm going into labor. I'm just wondering if anyone else has experienced this