What are you doing for the plugged ducts? Can you take a hot bath right now and massage the sore spots, then just go to bed with your baby next to you and nurse all night? That has cured many a stubborn clogged duct for me. Nursing works way better than pumping - in fact, pumping at work too much CAUSED a lot of clogged ducts for me, which my baby then fixed. Can you take a small manual hand pump with you in your outdoor work and at least take the edge off before you can officially pump again? I used to pump in the car all the time with just a nursing cover on over the pump. You can do this!