Joint/ hip pain

On my run on monday, I must’ve injured my hip somehow because ever since then I have not been able to run (or even walk comfortably). it’s on my right side up near my butt/ right where my leg bone meets my hip in the back. Ive tried stretches and rolling it out but it doesn’t seem to be getting better. It doesn’t hurt when I’m sitting, it only hurts when I put my weight on it when I step down. Any ideas?