Does sciatica pain worsen when sitting on the floor ? can’t stand my back after maybe 20 min sitting

So I noticed that when I sit on the floor after maybe 5-10 min my back starts hurting , sometimes the pain goes to my outer thighs but mostly focused on the mid lower back .

I know sciatica is usually on one side , and for the most part it is always on one side , except when I sit on the floor . I was playing with my daughter a bit earlier today when I noticed my back and thighs were hurting and kind of stiff . The stiffness and thigh pain went away but the mid lower back doesn’t want to go away . Any tips ? Does this happen to you ?