Work and breastfeeding

I’m starting back at work friday, and I don’t get lunch breaks, i typically work around 8-10hours. my son is breastfed but i do give him about 2 bottles of formula a day. My question is, how in the world can i work 8-10 hours without my boobs hurting!! i don’t think i’ll have enough time to pump at work.

UPDATE

I’m a server at a busy restaurant, there’s not really a place or time to get a break. because by the time they say i can take a break it’ll be another hour or two before my tables get up