A.P.
Mine is older than yours, but was probably used less. I am not able to pump at this point, and I thought it was because my pump wasn't working. My lactation consultant said that, as long as you hold the pump to your hand (the flange part that would fit on your breast), and there is suction, and you can hear the suction, your pump is working. So mine is working--my lac consultant said the reason I can't pump is that, now that my daughter is older, she is more efficient than the pump, and my breasts are not accustomed to pumping. So she nurses just fine--when I'm away from her, I start to get sore, but my pump yields nothing. Go figure. That didn't happen with my son. Anyway, test your pump that way. If you still have questions or doubts, I'd call a lactation consultant before going out and buying a new pump. Good luck!