My facial spider vein looks worse after laser treatment, should I try Thermocoagulation instead? (photo)

I've had laser treatment and most veins have little or no visible improvement. The last treatment was two weeks ago and one vein now looks much worse. It is larger and much redder than before. Why has laser not worked for me? Would Thermocoagulation help? If so, how long do I need to wait before I can carry out the Thermocoagulation treatment? Thank you in advance for your help and advice.