Sore thickened area evening after Botox injection, but no bruising--normal?

I had 15u of Botox injected for above nose area (5 injections), and one point on center-right is sore, whereas I can't feel the others. Right after the injections there was a raised thickened area, which now many hours later is still present and feels warm to touch, though is normal skin color, no visible bruising. If I lower my face to the ground, blood flows toward my face, and the area feels like there's a lot of pressure. I've tried very gentle cold pack application, but it didn't really help.