Hi krystals

Awesome to hear that you guys are off to a great start with BFing!!! It sounds similar to what I had just last week...turned out to be blocked ducts. Couldnt feel any lumps until the slight swelling went down and then the pea sized lumps were very prominant sooooo perhaps you can try a nice hot shower massaging your boob from the sore spot out towards your nipple and it will hurt like holy hell to start with, then a warm pack before you feed, positioning bubs nose (I think it is) on that spot. Also try some nice relieveing cold packs just to ease the discomfort.
Hang in there, you are doing a great job feeding DS