Are you having trouble with your output when pumping? Are you uncomfortable while pumping?
Being a working, breastfeeding, mother can be stressful as it is. And when our pumping session isn’t smooth it can cause stress that, then, overflows into our work. If your pumping session is less than perfect, this could be one reason why!
Check your flange size and make sure your nipple is the only thing getting pulled into the flange.
I was using the wrong size for the longest time and couldn’t figure out why my output was low and my nipples hurt every time I pumped. You might need to get a different size like I did, then be well on your way to a better, more comfortable pumping session!