Should I worry?

Soooo, I woke up yesterday with insane pelvic pain and pressure. Like it hurts to walk, sit, lay down, everything. I didn’t have any pain before in my pregnancy like that, mostly just upper hips or lower back. Then today walking around Walmart my stomach got very tight and hard for a bit, twice. So maybe Braxton Hicks? This is all Greek to me as it’s my first pregnancy. Idk when to be concerned, I have been very active the last couple days (we’re throwing out quite a bit and nesting is in full swing so I’m organizing and cleaning everything) but I don’t think anything too strenuous so idk if maybe I’m just sore from moving around a lot. I’m 30 weeks but measured at 34 my appointment a few days ago.