I have been having laser, and chemical ablation treatments for Vein Disease since 3-2-18. My right leg has developed blood clots after each treatment. I feel a pressure in my chest, thickness in my throat, when I take a breath, its like I am not getting enough air-the vein clinic told me to go to the ER if I have a pain in my chest, and shortness of breath, I don't feel pain, just pressure-should I still go to the ER?