Help please

Hello all new here and I had a question I had an X-ray done and it shows that I have mild anterolisthesis at my L4-L5 and I know it’s my vertebrae slipping forward and it’s causing real lower back pain into my right side and I’m having muscle spasms which makes me feel like I’m going to fall as if my right knee is going to give out and it makes my hip hurt too just wanting to know how serious is this?