I guess you're thinking of SINCE THAT BLACK CAT CROSSED MY PATH, written by Elsie McWilliams, and recorded by Ernest Tubb around 1937. I transcribed these excerpts from 2 different sound samples found at Allmusic.com:

...First thing that I saw this mornin' was a black cloud hangin' round,
Then I got your letter, baby, sayin' you done turned me down....

...yesterday the sky was blue.
Yesterday I spent in dreamin' happy hours away with you,
But I got chills, I don't mean maybe, just like a shower bath,
For since I left you last night, baby, a black cat crossed my path....