Is there something wrong?

What is your question?

Hello! My beloved cavi seems to have slight trouble accelerating as fast as it normally does. We had just gotten past a week long winter storm with excessive snowing (my car has sat throughout most of this storm because roads were bad) and single digit temperatures (when I first noticed this issue, I simply figured it was too cold for the engine; as the rest of the time my car wouldn't start-my battery had to be jumpstarted to run again after the storm) but as soon as the roads cleared up and the weather went back to normal I noticed that it had trouble accelerating and would start shaking at 70mph.. I figured it was definitely time for my oil to be changed (service was due) so I did that and the car runs way more smoothly aside the slight acceleration delay, which makes me worried... Is there something wrong?

How long has your 2001 Chevrolet Cavalier had this problem?

Not even a week