Are you trying self massage or are you seeing a competent therapist? There is another muscle, the brachialis, located deep to the biceps brachii. You won't feel its "bumps" unless you have advanced palpation skills and have previously released the excess tension in the biceps brachii.
I highly recommend seeing a nationally certified professional. I've seen too many people go too hard in self massage, causing muscle tears and internal scarring that contributed to their existing problems. A good pro can get in there and treat it appropriately without risk of injury.