RBBB and smoking weed?

Question

I'm 21, almost 22, and I have just been diagnosed with Right Bundle Branch Block. I have many reasons for why I may have it. This cough I've had for 3 months could have caused it, and I also have a family history of heart disease and high blood pressure. I have been smoking weed since I was 17 and don't really wanna quit. Do you guys think I might have to quit? Will smoking weed make my condition worse or someday kill me? I'm afraid to tell my doctors I smoke weed also because my mom is a nurse in the same clinic and I'm afraid of her somehow seeing any notes in my record through the system. Help.