I am NOT an MD, nor PT specialist, nor any certified medical professional. But I did have a quite severe case of 'Sciatica', some many decades back. With occasional lesser outbreaks in the subsequent years.
If you haven't done some research on 'Sciatica', it's a good thing to develop some basic understanding...
As always, it's best to address ith with the help of a Professional with strong knowledge of the various forms that 'Sciatica' might take. Even with that, it's often difficult to really pinpoint.
Mine was 'severe' and eventually diagnosed as 'Piriformis syndrome' - which can happen to some significant percent of the population. Susceptibility is due to variation in anatomical structure - no thing which would be considered a disease or malformation...
Anyway, The Sciatic nerve issues tend to happen at the Lumbar spine and pelvic girdle areas. It is an irritation of the Sciatic nerve by skeletal or muscle abrasion/trapping - predominantly of the Myelin Sheath of the Sciatic nerve.
If the condition is caused by the piriformis muscle, the muscle has likely gone itno some level of spasm... The piriformis attaches deep within the Pelvic girdle and is not easily reached (if at all).
'Stretching' for Piriformis Syndrome is often counterproductive (as it was in my case, stretching just caused greater 'irritation').
I went saw my Primary and then thru a few 'specialists', over a period of months with no relief. I finally came to one doctor, who also agreed it was 'piriformis' and had me stop stretching, staying with moderate exertion level of any activity, and no 'abrupt' movements, like sprinting or similar. THE PRIMARY Treatment was regular and high dosing of 'Ibuprofen'. At that time it was ont OTC and could only be had by prescription. He had me do an ongoing regimen of 1200 to 1600 mg daily (and also lots of water intake to reduce risk of Kidney damage - which I had none).
After about 3 weeks I started to experience sizeable relief (my case was very severe).
What I had may not be your issue - so Best to get it Well Defined....
Until that time, 'stretching/abducting/rotating the leg or forward bend stretching may NOT be a solution and rather may exacerbate the issue.
These days, when I feel a 'ting', I know I'm falling down on keeping my core strong... and I do some shortterm use of regular doses of Ibuprofen - has always gotten me back to where I can place attention again to my back strength an core.
Get a good definition of what your form of Sciatica might be - and then apply the suggested therapy for it.
Ride On
Yuri