Colostrum ??

im 38 weeks, my doctor gave me the go ahead on pumping cause im being induced next week, possible c section and I want milk ready in case. I have been pumping 15 mins on each side daily getting close to a ounce all together but now my boobs feel like i need to pump more frequently or they get sore and feel full. has anyone else experienced this?

edit to add- it’s to late for the don’t do it comments* I have been pumping for a week now and im asking if anyone knows a way to relieve this rather it’s pump more often or any other ideas😊