CHEST PAIN. Lump on my ribs could be?

I am a 33 year old female who was diagnosed with Costochondritis about 8 years ago. Within the past few days my ribs have been hurting alot and I noticed a lump on the left side of my ribs that has never been there before. I went to the Doctor, & found Costochondritis I think there is something else wrong with me. It hurts when I bend over. It hurts when I take a deep breath and even when I lay a certain way it'll start hurting. I don't know of any family members who have had similar symptoms. And I am currently taking Lyrica 75. Tryptomer 10 for my pain, . Can you please help me figure out what the lump on my ribs could be? 2006 i have twisted by waist by sitting due to normal back pain, still that i am getting the same symptoms worse, I by left ribs upper than the right one ,but scoliosis result normal height decrease D-7 & D9... i am very confused & depressive ...please get me rid of it