Scared of dying

While pregnant I had a stroke, and it was very scary. Afterwards I have been extremely worried, and afraid of something like that happening again.. especially after having my baby. The other day I was walking down my hall, when all the sudden I got a tight feeling in my chest, and then pain/tightness in my arm. I didn’t think much of it.. it definitely stopped me in my tracks though, but I literally just shook my arm a little and went about my day. Now I am worried that I could’ve had a heart attack and not been aware. I looked it up, and apparently after suffering a stroke you are two times more likely to have a heart attack. I am so scared that something will happen to me while I’m alone with my baby. My husband works long hours, and if something were to happen, I am worried that I would drop my baby, or that she would be laying and crying for hours, or that she would smother, fall, etc. I don’t know what to do. I feel so paranoid.