Is it harmful to have sex on the day of sclerotherapy?

Is it harmful to have sex (with compression stockings) on the day of sclerotherapy if you have spider veins sclerosed 0.5% polidocanol? I have read that it jeopardizes the success of the treatment because the spider veins are then supplied with blood again due to increased blood pressure. Unfortunately, I didn't know it was on the prohibition list. It was just 5 minutes... thanks for answer