What To Do For The Discomfort In The Chest?

for the past 6 month's or so ive had some chest problems. where the 2 halfs of my ribs come together is where i feel pressure. 6 month's ago in the same place the was like something loose in that area like a bone or something that would kind of pop out..so i would pop it back in. recently ive been having trouble breathing though..and it seems like its coming from the same place. I burp way too much, and i feel like i have too much gas in me always. I suffer from anxiety but i dont think that has to do with this at all. I feel fine when i first wake up..but it seems to get worse as the day goes on. My doctor gave me omeprazole because i was having trouble breathing like a month and a half ago. I have no allergies. Im 20 years old, Im 5'8, i weigh 183 lbs. I also have a lump under my right rib cage but as of 2 days ago it was determined that it was like a group of fat tissue or whatever, and the doctor said that wouldnt affect my breathing at all. also lately my stomach seems to go numb, and my hands get tingally when im just sitting down.