Strange headache, if I tilt my head tthe pain slowly moves

I have a strange headache. It feels like a sinus headache, the front of my head, on the right side, is throbbing and is accompanied by congestion. But the thing is, if I tilt my head to the left, the pain slowly moves to the left side of my head. The same happens when I tilt my head back, the pain somehow moves to the back of my head. And when I say move, I mean I can actually feel the pain moving around. The pain kind of feels like water slowly moving around in my head. That's the best way I can describe it. Is that normal for a sinus headache?