Hi... I suggest you to kindly get your back investigated thoroughly... Once the root cause for the radiating pain is pointed out then it will be very easy to treat... Nowadays sciatica can be treated easily..dont worry ... I recommend you to Keep icing your back and butt area frequently to reduce the pain... Wear a lumbar support if you have that will give an external support for you to help reduce spasm... Take rest...as irritation gets subsided with proper rest... Dont bend forward... Don t lift any weights...for sometime... Once pain permits.. gently stretch your low back...glute.. hamstrings..calf muscles... Once pain intensity comes down then...start core and glute stability program... Hope this information hep you... Do revert back incase you need any further clarification....