It is highly unlikely that the power outage on that side of the house was caused by you plugging the vacuum into a different outlet. Vacuum cleaners typically consume a relatively small amount of power, and it's unlikely that using it in a different outlet would overload the electrical system and cause a power outage.
Power outages can happen due to various reasons, such as issues with the electrical grid, tripped circuit breakers, blown fuses, or faults in the electrical wiring. These issues are generally not caused by ordinary household appliances like vacuum cleaners.
However, if you are concerned that your actions may have contributed to the power outage in some way, it's best to talk to your dad about it and explain what happened. He will likely appreciate your honesty and will be able to investigate the cause of the power outage properly. Keep in mind that accidents happen, and it's essential to communicate openly and honestly about any concerns.