Abnormal EKG @ 13 weeks.

Has anyone ever been told they have short PR interval in their EKG? I had one done 3 weeks ago that was abnormal so they referred me to a cardiologist to repeat yesterday & it was still abnormal. They are now sending me to a specialist next week. I'm not going to lie, I am FREAKING out. I'm starting to notice things I never noticed before like my heart racing (100+ bpm) often when I'm literally doing nothing. Google has me really scared. I'm 13 weeks 5 days with my rainbow baby & I'm so afraid I'm not going to survive labor because I have a broken ticker. Has this happened to anyone else? Can anyone share ANYTHING to make me feel better?