Input on what it is?

So I’m about 23 weeks going on 24 and my lower belly closer to where your pants are has been aching for the last few days. It hurts to move around in bed and hurts when I walk too. It’s like sore. I never had this with my son this much so i dont know what it is. I had a chiropractor adjustment on my back last week and maybe that is it??? I dont know what it is. Any input? It’s been around since Friday.