I have a Medela PISA. I got it in June 2010 when my DS was born and used it until maybe October 2011 to pump at work. I only work part time so was only using it around 5-8 times per week. I never had any problems with it so I kept it to use for my DD. I pumped on maternity leave and everything with it was fine. A couple weeks ago it seems like it doesn't have much suction. I always put it on the lower setting to pump but now when it's on the lower setting, it doesn't even draw my nipple in. I feel some suction from the tube but not a lot. I have to turn it all the way up to get any milk. My parts look fine and I changed those white things and the suction is still bad. Is there any way to fix this or do I have to get a new pump? I thought a lot of women used their pumps for more than one baby so I'd hate to buy a new one.