Spider veins post sclerotherapy treatment. Does this mean my treatment wasn't successful? (Photo)

I had my first session of sclerotherapy treatment 3 days ago, and my legs are bruised with dark blue/black circles where the injection sites were. I know all this is normal, but the veins around the dark circles are still fully intact and haven't changed at all. Should the entire vein become dark? Does this mean my treatment wasn't successful? My second session is scheduled 3 weeks from the first session. I've attached photos, any information on the progress and if things look normal/good? Thank you.