Max,
About a month ago, I had the same experience as you. I posted about it here, but couldn't find my post because I had a second procedure and, this time, it was not painful, and I wanted to update my negative post!
After the first procedure, tears were streaming down my cheeks and my doctor was surprised. He insisted it wasn't so bad, but I told him it was very unpleasant. That was my first of 6 scheduled treatments - the second one was for the very next day. I had to cancel. I just couldn't go through with that, two days in a row!
I told my doctor, I'd have to go through the procedures at a much slower pace. Fast forward to last week when I had the same vein lasered in my other leg. This time the procedure was not uncomfortable, at all. My doctor said he used a different technique. The only thing he specified was that he used a fresh needle with each injection (of the numbing medication). I must say that the injections were almost painless, but the first time I could feel them more, lol. However, the first time, the laser catheter inside my vein was uncomfortable, at times, so I don't know how he avoided that, the second time.
I'm usually a 'tough old broad,' in that I'm not a baby about pain, so I don't know exactly what happened the first time. Being tough, I declined the Xanax they offered me, to take the evening before and thirty minutes prior to the treatments. However, my doctor suggested I take it, so the second time, I accepted the prescription and religiously took the medication as prescribed! lol Maybe that was the difference! Here on out, I WILL take the Xanax for the procedure.
The first two procedures were the great saphenous vein, and my doctor said the other two procedures in each leg would be like a walk in the park compared to the first two, so I am now optomistic that my first experience was a fluke (I make this comment quite happily!)
Also, both times, I've done extremely well after the procedure, with perhaps a tiny bit of soreness upon touching the area and some itching, a few days later. No bruising or swelling, and no pain. My doctor is a thoracic surgeon who went to the laser ablations, later in his career, to wind down his pace a bit. He's unusually well qualified to do this, and I feel that has made much difference in my outcome, compared to what I'm reading here.
I noticed your post was a while back. Hopefully, you're doing well now.