Heart Block 2nd Degree

Last Tuesday I had a pace maker implanted for 2nd degree heart block. A year and a half ago I endured open heart surgery for a tumor the size of a goose egg in my left atrium.
I don't mean to whine but darnit I could of had a stroke or a cardiac arrest! Then the last 2 days of work I have been winded while walking from my car to the building! I guess that I am scared for what could happen next!
Staying off the internet would probly be wise so I don't get worked up about the articles I have been reading!
I am just very sad and tearful this evening....oh well I will get over it