Experience taking HRT as a hypochondriac?

I figured I’d read the feminizing effects of HRT to recap myself on it and compare what that would be like compared to not going on HRT. I clicked on the Mayo Clinic page about feminizing HRT, but before talking about changes, it talks about…risks. Blood clots, stroke, DIABETES!? My cousin was diagnosed with type I last summer, and I couldn’t help but worry nonstop. Didn’t help that I was eating chicken McNuggets the moment I heard about it. My parents had to let me know that I was screened as a little kid and have little to no risk, because I couldn’t stop thinking about it. I easily freak out about the sensations in my body. Like what if that thing I’m feeling is cancer? What if it requires painful treatments? What if I die from it? I hear that a lot of people get side effects as they adjust to HRT, one being nausea. I tend to get afraid of the possibility of throwing up in places where I wouldn’t wanna be throwing up. What if it were to happen at somewhere important like a job interview? I also hear that breasts hurt when they start growing. How bad really is it?