Beatriz

I changed my Stratocaster strings yesterday’s night and this morning they just won’t hold in tune. I’m a beginner guitarist and I broke my low E string so I decided to change all strings since they were the same for more than one year. I then removed all the old ones and left the Stratocaster without strings for a few days. I wonder if this has something to do with that. Now the new strings (Ernie ball regular slinky; the old ones where fender 09) go out of tune in a few seconds and my bridge keeps getting higher as I tighten them so I’m getting worried. The old ones never had tuning issues. I just hope I haven’t ruined my guitar because there are no guitar technics nearby. Please help.