Hello, I'm 36 weeks pregnant. Everything was fine until about 1-2 week…

Hello, I'm 36 weeks pregnant. Everything was fine until about 1-2 weeks ago, when I started feeling a burning sensation on the left side of my belly, like someone poured boiling water in there. It hasn't stopped since then. The ultrasound says everything is normal but it's getting stronger every day. Has anyone experienced this?