Re: Help! No let down!
Try not to panic. It can take some time to readjust to the pump after a long break. I didn't pump at all last summer, and upon my return to work IIRC it took me at least a couple weeks to really get back to where I was before the break (although it got progressively better every day - so don't let that get you down).
I had to add in some extra pumping sessions every day for a little while. It was a major drag, but once I got back into my routine after awhile I was able to stop the extra pumping.
Make sure all of the membranes, valves, tubing, etc. on your pump are new. Do breast compressions. Make sure you are using the right size breast shields like mommal suggested, size can change over time. Play around with the settings on your pump. Also, do your best to relax as worknpump mentioned; I liked to watch movies on Netflix or put on music and surf the web or play a game on my iPad. I think stress was a major factor for me after the summer break. I was stressed about pumping again in addition to being stressed about going back to work. It's really difficult, but I had to find ways to take my mind off pumping and relax. Bake some lactation cookies and/or have a bowl of oatmeal in the morning. That helped me a little bit too.
Don't worry; you'll get back in the pumping groove. It might take a little time, but it will happen.
K. Sophia - Mama to my little lactivore, the amazing Mr. X (11/10).