MIL bought me a medela swing pump in august last year (im guessing..it was mid year sometome)

i used it 1 time a day, 3-4 days a week for a month or two, then 2 times a day from nov til now.

and i think the motor is going.
Should it last longer than this or have i killed it?
It turns off while im expressing. Not every time but id say 50% of the tie i have to turn it back on at least once or twice.